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Natural Resource Partners LP – ‘10-Q’ for 6/30/21

On:  Friday, 8/6/21, at 10:23am ET   ·   For:  6/30/21   ·   Accession #:  1171486-21-24   ·   File #:  1-31465

Previous ‘10-Q’:  ‘10-Q’ on 5/6/21 for 3/31/21   ·   Next:  ‘10-Q’ on 11/3/21 for 9/30/21   ·   Latest:  ‘10-Q’ on 5/7/24 for 3/31/24   ·   4 References:   

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  As Of               Filer                 Filing    For·On·As Docs:Size

 8/06/21  Natural Resource Partners LP      10-Q        6/30/21   77:8.1M

Quarterly Report   —   Form 10-Q

Filing Table of Contents

Document/Exhibit                   Description                      Pages   Size 

 1: 10-Q        Quarterly Report                                    HTML    973K 
 2: EX-31.1     Certification -- §302 - SOA'02                      HTML     28K 
 3: EX-31.2     Certification -- §302 - SOA'02                      HTML     28K 
 4: EX-32.1     Certification -- §906 - SOA'02                      HTML     23K 
 5: EX-32.2     Certification -- §906 - SOA'02                      HTML     23K 
12: R1          Cover                                               HTML     73K 
13: R2          Consolidated Balance Sheets                         HTML    134K 
14: R3          Consolidated Balance Sheets (Parenthetical)         HTML     34K 
15: R4          Consolidated Statements of Comprehensive Income     HTML     97K 
16: R5          Consolidated Statements of Partners' Capital        HTML    134K 
17: R6          Consolidated Statements of Cash Flows               HTML    131K 
18: R7          Basis of Presentation                               HTML     25K 
19: R8          Revenue from Contracts with Customers               HTML     88K 
20: R9          Common and Preferred Unit Distributions             HTML     45K 
21: R10         Net Income Per Common Unit                          HTML     78K 
22: R11         Segment Information                                 HTML    101K 
23: R12         Equity Investment                                   HTML     47K 
24: R13         Mineral Rights, Net                                 HTML     45K 
25: R14         Debt, Net                                           HTML     57K 
26: R15         Fair Value Measurements                             HTML     45K 
27: R16         Related Party Transactions                          HTML     34K 
28: R17         Major Customers                                     HTML     39K 
29: R18         Commitments and Contingencies                       HTML     24K 
30: R19         Unit-Based Compensation                             HTML     31K 
31: R20         Credit Losses                                       HTML     42K 
32: R21         Financing Transaction                               HTML     24K 
33: R22         Subsequent Events                                   HTML     24K 
34: R23         Basis of Presentation (Policies)                    HTML     24K 
35: R24         Revenue from Contracts with Customers (Tables)      HTML     91K 
36: R25         Common and Preferred Unit Distributions (Tables)    HTML     42K 
37: R26         Net Income Per Common Unit (Tables)                 HTML     75K 
38: R27         Segment Information (Tables)                        HTML     95K 
39: R28         Equity Investment (Tables)                          HTML     47K 
40: R29         Mineral Rights, Net (Tables)                        HTML     42K 
41: R30         Debt, Net (Tables)                                  HTML     47K 
42: R31         Fair Value Measurements (Tables)                    HTML     42K 
43: R32         Related Party Transactions (Tables)                 HTML     30K 
44: R33         Major Customers (Tables)                            HTML     40K 
45: R34         Unit-Based Compensation (Tables)                    HTML     31K 
46: R35         Credit Losses (Tables)                              HTML     37K 
47: R36         Basis of Presentation - Narrative (Details)         HTML     27K 
48: R37         Revenue from Contracts with Customers - Schedule    HTML     67K 
                of Partnerships' Coal Royalty and Other Segment                  
                Revenues from Contracts with Customers (Details)                 
49: R38         Revenue from Contracts with Customers - Schedule    HTML     33K 
                of Receivables and Liabilities from Contracts with               
                Customers (Details)                                              
50: R39         Revenue from Contracts with Customers Revenue       HTML     27K 
                Recognition Deferred Revenue Rollforward (Details)               
51: R40         Revenue from Contracts with Customers - Schedule    HTML     41K 
                of Annual Minimums by Current Remaining Contract                 
                Term (Details)                                                   
52: R41         Common and Preferred Unit Distributions Narrative   HTML     32K 
                (Details)                                                        
53: R42         Common and Preferred Unit Distributions             HTML     52K 
                Distributions declared and paid (Details)                        
54: R43         Net Income Per Common Unit (Details)                HTML     88K 
55: R44         Segment Information - Additional Information        HTML     27K 
                (Details)                                                        
56: R45         Segment Information - Schedule of Segment           HTML     70K 
                Reporting Information, by Segment (Details)                      
57: R46         Equity Investment - Additional Information          HTML     24K 
                (Detail)                                                         
58: R47         Equity Investment Summary of Activity in Equity     HTML     38K 
                Method Investment (Details)                                      
59: R48         Equity Investment - Schedule of Summarized          HTML     55K 
                Financial Information of Unaudited Financial                     
                Statements (Detail)                                              
60: R49         Mineral Rights, Net - Mineral Rights (Detail)       HTML     45K 
61: R50         Mineral Rights, Net - Additional Information        HTML     31K 
                (Detail)                                                         
62: R51         Debt, Net - Debt (Detail)                           HTML     67K 
63: R52         Debt, Net - Additional Information (Detail)         HTML     78K 
64: R53         Fair Value Measurements - Contracts Receivable and  HTML     46K 
                Debt (Detail)                                                    
65: R54         Fair Value Measurements - Embedded Derivatives      HTML     22K 
                (Detail)                                                         
66: R55         Related Party Transactions - Narrative (Details)    HTML     35K 
67: R56         Related Party Transactions - Summary of             HTML     37K 
                Reimbursements (Details)                                         
68: R57         Major Customers (Detail)                            HTML     42K 
69: R58         Unit-Based Compensation (Details)                   HTML     34K 
70: R59         Unit-Based Compensation Summary of unit based       HTML     42K 
                activity (Details)                                               
71: R60         Credit Losses (Details)                             HTML     47K 
72: R61         Financing Transaction (Details)                     HTML     29K 
73: R62         Subsequent Events - Additional Information          HTML     31K 
                (Detail)                                                         
75: XML         IDEA XML File -- Filing Summary                      XML    135K 
11: XML         XBRL Instance -- nrp-20210630_htm                    XML   2.19M 
74: EXCEL       IDEA Workbook of Financial Reports                  XLSX     84K 
 7: EX-101.CAL  XBRL Calculations -- nrp-20210630_cal                XML    149K 
 8: EX-101.DEF  XBRL Definitions -- nrp-20210630_def                 XML    613K 
 9: EX-101.LAB  XBRL Labels -- nrp-20210630_lab                      XML   1.36M 
10: EX-101.PRE  XBRL Presentations -- nrp-20210630_pre               XML    852K 
 6: EX-101.SCH  XBRL Schema -- nrp-20210630                          XSD    164K 
76: JSON        XBRL Instance as JSON Data -- MetaLinks              337±   473K 
77: ZIP         XBRL Zipped Folder -- 0001171486-21-000024-xbrl      Zip    317K 


‘10-Q’   —   Quarterly Report

Document Table of Contents

Page (sequential)   (alphabetic) Top
 
11st Page  –  Filing Submission
"Table of Contents
"Part I. Financial Information
"Item 1
"Consolidated Financial Statements
"Consolidated Balance Sheets
"Consolidated Statements of Comprehensive Income
"Oss)
"Consolidated Statements of Partners' Capital
"Consolidated Statements of Cash Flows
"Notes to Consolidated Financial Statements
"Note 1. Basis of Presentation
"Note 5. Segment Information
"Note 8. Debt, Net
"Note 10. Related Party Transactions
"Note 11. Major Customers
"Note 14. Financing Trans
"Action
"Note 14. Financing Transaction
"Item 2
"Management's Discussion and Analysis of Financial Condition and Results of Operations
"Item 3
"Quantitative and Qualitative Disclosures About Market Risk
"Item 4
"Controls and Procedures
"Part II. Other Information
"Legal Proceedings
"Item 1A
"Risk Factors
"Unregistered Sales of Equity Securities and Use of Proceeds
"Defaults Upon Senior Securities
"Mine Safety Disclosures
"Item 5
"Other Information
"Item 6
"Exhibits
"Signatures

This is an HTML Document rendered as filed.  [ Alternative Formats ]



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UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
FORM  i 10-Q
 i QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
For the quarterly period ended  i June 30, 2021 or
 i 
TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
Commission file number:  i 001-31465
nrp-20210630_g1.gif
 i NATURAL RESOURCE PARTNERS LP
(Exact name of registrant as specified in its charter)
 i Delaware  i 35-2164875
(State or other jurisdiction of
incorporation or organization)
 (I.R.S. Employer
Identification No.)
 i 1201 Louisiana Street, Suite 3400
 i Houston,  i Texas  i 77002
(Address of principal executive offices)
(Zip Code)
( i 713)  i 751-7507
(Registrant’s telephone number, including area code) 
Securities registered pursuant to Section 12(b) of the Act:
Title of each classTrading Symbol(s)Name of each exchange on which registered
 i Common Units representing limited partner interests i NRP i New York Stock Exchange
Indicate by check mark whether the registrant: (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.     i Yes      No  
Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files).     i Yes     No ☐
Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, smaller reporting company, or an emerging growth company. See definition of "accelerated filer", "large accelerated filer", "smaller reporting company," and "emerging growth company" in Rule 12b-2 of the Exchange Act.
Large Accelerated Filer i Accelerated Filer 
Non-accelerated Filer
  (Do not check if a smaller reporting company)
Smaller Reporting Company  i 
Emerging Growth Company  i 
If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.  
Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).    Yes   i     No  
APPLICABLE ONLY TO ISSUERS INVOLVED IN BANKRUPTCY PROCEEDINGS DURING THE PRECEDING FIVE YEARS:
Indicate by check mark whether the registrant has filed all documents and reports required to be filed by Section 12, 13 or 15(d) of the Securities Exchange Act of 1934 subsequent to the distribution of securities under a plan confirmed by a court.  Yes      No  
APPLICABLE ONLY TO CORPORATE ISSUERS
Indicate the number of shares outstanding of each of the issuer’s classes of common stock, as of the latest practicable date.


Table of Contents




NATURAL RESOURCE PARTNERS, L.P.
TABLE OF CONTENTS
  Page




i

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PART I. FINANCIAL INFORMATION
ITEM 1. CONSOLIDATED FINANCIAL STATEMENTS

NATURAL RESOURCE PARTNERS L.P.
CONSOLIDATED BALANCE SHEETS
June 30,December 31,
(In thousands, except unit data)20212020
ASSETS(Unaudited)
Current assets
Cash and cash equivalents$ i 97,908 $ i 99,790 
Accounts receivable, net i 15,322  i 12,322 
Other current assets, net i 4,038  i 5,080 
Total current assets$ i 117,268 $ i 117,192 
Land i 24,008  i 24,008 
Mineral rights, net i 447,155  i 460,373 
Intangible assets, net i 16,742  i 17,459 
Equity in unconsolidated investment i 266,433  i 262,514 
Long-term contract receivable, net i 32,514  i 33,264 
Other long-term assets, net i 6,085  i 7,067 
Total assets$ i 910,205 $ i 921,877 
LIABILITIES AND CAPITAL
Current liabilities
Accounts payable$ i 1,293 $ i 1,385 
Accrued liabilities i 5,746  i 7,733 
Accrued interest i 1,423  i 1,714 
Current portion of deferred revenue i 10,293  i 11,485 
Current portion of long-term debt, net i 39,060  i 39,055 
Total current liabilities$ i 57,815 $ i 61,372 
Deferred revenue i 51,793  i 50,069 
Long-term debt, net i 414,099  i 432,444 
Other non-current liabilities i 4,819  i 5,131 
Total liabilities$ i 528,526 $ i 549,016 
Commitments and contingencies (see Note 12)  i  i 
Class A Convertible Preferred Units ( i  i 261,420 /  and  i  i 253,750 /  units issued and outstanding at June 30, 2021 and December 31, 2020, respectively, at $ i  i 1,000 /  par value per unit; liquidation preference of $ i 1,850 per unit at June 30, 2021 and $ i 1,700 per unit at December 31, 2020)
$ i 176,006 $ i 168,337 
Partners’ capital
Common unitholders’ interest ( i  i 12,351,306 /  and  i  i 12,261,199 /  units issued and outstanding at June 30, 2021 and December 31, 2020, respectively)
$ i 134,836 $ i 136,927 
General partner’s interest i 434  i 459 
Warrant holders’ interest i 66,816  i 66,816 
Accumulated other comprehensive income  i 3,587  i 322 
Total partners’ capital$ i 205,673 $ i 204,524 
Total liabilities and partners' capital$ i 910,205 $ i 921,877 

The accompanying notes are an integral part of these consolidated financial statements.
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NATURAL RESOURCE PARTNERS L.P.
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS)
(Unaudited)
 For the Three Months Ended
June 30,
For the Six Months Ended June 30,
(In thousands, except per unit data)2021202020212020
Revenues and other income
Coal royalty and other$ i 33,611 $ i 31,666 $ i 66,538 $ i 63,099 
Transportation and processing services i 2,182  i 1,938  i 4,374  i 4,447 
Equity in earnings (loss) of Ciner Wyoming i 2,601 ( i 3,058) i 4,574  i 3,214 
Gain on asset sales and disposals i 116  i 465  i 175  i 465 
Total revenues and other income$ i 38,510 $ i 31,011 $ i 75,661 $ i 71,225 
Operating expenses
Operating and maintenance expenses$ i 5,170 $ i 8,217 $ i 10,722 $ i 13,419 
Depreciation, depletion and amortization i 4,871  i 2,062  i 9,963  i 4,074 
General and administrative expenses i 3,388  i 3,621  i 7,498  i 7,534 
Asset impairments i  i 16 /   i 132,283  i 4,059  i 132,283 
Total operating expenses$ i 13,445 $ i 146,183 $ i 32,242 $ i 157,310 
Income (loss) from operations$ i 25,065 $( i 115,172)$ i 43,419 $( i 86,085)
Interest expense, net$( i 9,683)$( i 10,329)$( i 19,656)$( i 20,637)
Net income (loss)$ i 15,382 $( i 125,501)$ i 23,763 $( i 106,722)
Less: income attributable to preferred unitholders( i 7,842)( i 7,613)( i 15,569)( i 15,113)
Net income (loss) attributable to common unitholders and the general partner$ i 7,540 $( i 133,114)$ i 8,194 $( i 121,835)
Net income (loss) attributable to common unitholders$ i 7,389 $( i 130,452)$ i 8,030 $( i 119,398)
Net income (loss) attributable to the general partner i 151 ( i 2,662) i 164 ( i 2,437)
Net income (loss) per common unit (see Note 4)
Basic$ i 0.60 $( i 10.64)$ i 0.65 $( i 9.74)
Diluted i 0.56 ( i 10.64) i 0.65 ( i 9.74)
Net income (loss)$ i 15,382 $( i 125,501)$ i 23,763 $( i 106,722)
Comprehensive income from unconsolidated investment and other i 2,533  i 1,359  i 3,265  i 336 
Comprehensive income (loss)$ i 17,915 $( i 124,142)$ i 27,028 $( i 106,386)

The accompanying notes are an integral part of these consolidated financial statements.
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NATURAL RESOURCE PARTNERS L.P.
CONSOLIDATED STATEMENTS OF PARTNERS’ CAPITAL
(Unaudited)

 Common UnitholdersGeneral PartnerWarrant HoldersAccumulated
Other
Comprehensive Income
Partners' Capital Excluding Non-Controlling InterestNon-Controlling InterestTotal Capital
 
(In thousands)UnitsAmounts
Balance at December 31, 2020 i 12,261 $136,927 $459 $ i 66,816 $ i 322 $ i 204,524 $ i  $ i 204,524 
Net income (1)
—  i 8,213  i 168 — —  i 8,381 —  i 8,381 
Distributions to common unitholders and the general partner— ( i 5,517)( i 113)— — ( i 5,630)— ( i 5,630)
Distributions to preferred unitholders— ( i 7,461)( i 152)— — ( i 7,613)— ( i 7,613)
Issuance of unit-based awards i 90 — — — —  i  —  i  
Unit-based awards amortization and vesting, net—  i 215 — — —  i 215 —  i 215 
Capital contribution— —  i 32 — —  i 32 —  i 32 
Comprehensive income from unconsolidated investment and other— — — —  i 732  i 732 —  i 732 
Balance at March 31, 2021 i 12,351 $ i 132,377 $ i 394 $ i 66,816 $ i 1,054 $ i 200,641 $ i  $ i 200,641 
Net income (2)
—  i 15,074  i 308 — —  i 15,382 —  i 15,382 
Distributions to common unitholders and the general partner— ( i 5,559)( i 113)— — ( i 5,672)— ( i 5,672)
Distributions to preferred unitholders— ( i 7,571)( i 155)— — ( i 7,726)— ( i 7,726)
Unit-based awards amortization and vesting—  i 515 — — —  i 515 —  i 515 
Comprehensive income from unconsolidated investment and other—  i   i  —  i 2,533  i 2,533 —  i 2,533 
Balance at June 30, 2021 i 12,351 $ i 134,836 $ i 434 $ i 66,816 $ i 3,587 $ i 205,673 $ i  $ i 205,673 
(1)Net income includes $ i 7.7 million of income attributable to preferred unitholders that accumulated during the period, of which $ i 7.6 million is allocated to the common unitholders and $ i 0.2 million is allocated to the general partner.
(2)Net income includes $ i 7.8 million of income attributable to preferred unitholders that accumulated during the period, of which $ i 7.7 million is allocated to the common unitholders and $ i 0.2 million is allocated to the general partner.


The accompanying notes are an integral part of these consolidated financial statements.
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NATURAL RESOURCE PARTNERS L.P.
CONSOLIDATED STATEMENTS OF PARTNERS’ CAPITAL
(Unaudited)

 Common UnitholdersGeneral PartnerWarrant HoldersAccumulated
Other
Comprehensive
Loss
Partners' Capital Excluding Non-Controlling InterestNon-Controlling InterestTotal Capital
 
(In thousands)UnitsAmounts
Balance at December 31, 2019 i 12,261 $ i 271,471 $ i 3,270 $ i 66,816 $( i 2,594)$ i 338,963 $( i 2,935)$ i 336,028 
Cumulative effect of adoption of accounting standard (see Note 15)— ( i 3,833)( i 78)— — ( i 3,911)— ( i 3,911)
Net income (1)
—  i 18,403  i 376 — —  i 18,779 —  i 18,779 
Distributions to common unitholders and the general partner— ( i 5,517)( i 113)— — ( i 5,630)— ( i 5,630)
Distributions to preferred unitholders— ( i 7,350)( i 150)— — ( i 7,500)— ( i 7,500)
Unit-based awards amortization and vesting—  i 673 — — —  i 673 —  i 673 
Comprehensive loss from unconsolidated investment and other— — — — ( i 1,023)( i 1,023)— ( i 1,023)
Balance at March 31, 2020 i 12,261 $ i 273,847 $ i 3,305 $ i 66,816 $( i 3,617)$ i 340,351 $( i 2,935)$ i 337,416 
Net loss (2)
— ( i 122,991)( i 2,510)— — ( i 125,501)— ( i 125,501)
Distributions to preferred unitholders— ( i 7,461)( i 152)— — ( i 7,613)— ( i 7,613)
Acquisition of non-controlling interest in BRP— ( i 4,747)( i 97)— — ( i 4,844) i 2,935 ( i 1,909)
Unit-based awards amortization and vesting—  i 869 — — —  i 869 —  i 869 
Comprehensive income from unconsolidated investment and other—  i   i  —  i 1,359  i 1,359 —  i 1,359 
Balance at June 30, 2020 i 12,261 $ i 139,517 $ i 546 $ i 66,816 $( i 2,258)$ i 204,621 $ i  $ i 204,621 
(1)Net income includes $ i 7.5 million of income attributable to preferred unitholders that accumulated during the period, of which $ i 7.4 million is allocated to the common unitholders and $ i 0.2 million is allocated to the general partner.
(2)Net loss includes $ i 7.6 million of income attributable to preferred unitholders that accumulated during the period, of which $ i 7.5 million is allocated to the common unitholders and $ i 0.2 million is allocated to the general partner.


The accompanying notes are an integral part of these consolidated financial statements.
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NATURAL RESOURCE PARTNERS L.P.
CONSOLIDATED STATEMENTS OF CASH FLOWS
(Unaudited)


 For the Six Months Ended June 30,
(In thousands)20212020
Cash flows from operating activities
Net income (loss)$ i 23,763 $( i 106,722)
Adjustments to reconcile net income (loss) to net cash provided by operating activities of continuing operations:
Depreciation, depletion and amortization i 9,963  i 4,074 
Distributions from unconsolidated investment i 3,920  i 14,210 
Equity earnings from unconsolidated investment( i 4,574)( i 3,214)
Gain on asset sales and disposals( i 175)( i 465)
Asset impairments i 4,059  i 132,283 
Bad debt expense( i 354) i 3,657 
Unit-based compensation expense i 1,719  i 1,653 
Amortization of debt issuance costs and other i 1,246 ( i 1,086)
Change in operating assets and liabilities:
Accounts receivable( i 3,169) i 3,373 
Accounts payable( i 93) i 49 
Accrued liabilities( i 1,196)( i 3,776)
Accrued interest( i 291)( i 291)
Deferred revenue i 531  i 10,467 
Other items, net i 1,235 ( i 4,122)
Net cash provided by operating activities of continuing operations$ i 36,584 $ i 50,090 
Net cash provided by operating activities of discontinued operations i   i 1,706 
Net cash provided by operating activities$ i 36,584 $ i 51,796 
Cash flows from investing activities
Proceeds from asset sales and disposals$ i 175 $ i 507 
Return of long-term contract receivable i 1,082  i 1,130 
Acquisition of non-controlling interest in BRP i  ( i 1,000)
Net cash provided by investing activities of continuing operations$ i 1,257 $ i 637 
Net cash used in investing activities of discontinued operations i  ( i 66)
Net cash provided by investing activities$ i 1,257 $ i 571 
Cash flows from financing activities
Debt repayments$( i 19,061)$( i 19,061)
Distributions to common unitholders and the general partner( i 11,302)( i 5,630)
Distributions to preferred unitholders( i 7,670)( i 15,113)
Contributions from discontinued operations i   i 1,640 
Acquisition of non-controlling interest in BRP( i 1,000) i  
Other items( i 690) i  
Net cash used in financing activities of continuing operations$( i 39,723)$( i 38,164)
Net cash used in financing activities of discontinued operations i  ( i 1,640)
Net cash used in financing activities$( i 39,723)$( i 39,804)
Net increase (decrease) in cash and cash equivalents$( i 1,882)$ i 12,563 
Cash and cash equivalents of continuing operations at beginning of period i 99,790  i 98,265 
Cash and cash equivalents at end of period$ i 97,908 $ i 110,828 
Supplemental cash flow information:
Cash paid for interest$ i 18,931 $ i 20,222 
Non-cash investing and financing activities:
Plant, equipment, mineral rights and other funded with accounts payable or accrued liabilities$ i  $ i 924 
Preferred unit distributions paid-in-kind i 7,669  i  
The accompanying notes are an integral part of these consolidated financial statements.
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NATURAL RESOURCE PARTNERS L.P.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
(Unaudited)


1.     i Basis of Presentation
Nature of Business
Natural Resource Partners L.P. (the "Partnership") engages principally in the business of owning, managing and leasing a diversified portfolio of mineral properties in the United States, including interests in coal and other natural resources and owns a non-controlling  i 49% interest in Ciner Wyoming LLC ("Ciner Wyoming"), a trona ore mining and soda ash production business. The Partnership is organized into  i two operating segments further described in Note 5. Segment Information. As used in these Notes to Consolidated Financial Statements, the terms "NRP," "we," "us" and "our" refer to Natural Resource Partners L.P. and its subsidiaries, unless otherwise stated or indicated by context.
 i 
Principles of Consolidation and Reporting
The accompanying unaudited Consolidated Financial Statements of the Partnership have been prepared in accordance with generally accepted accounting principles in the United States of America ("GAAP") for interim financial information and with Rule 10-01 of Regulation S-X. Accordingly, they do not include all of the information and footnotes required by GAAP for complete financial statements. These financial statements should be read in conjunction with the financial statements for the year ended December 31, 2020 and notes thereto included in the Partnership's Annual Report on Form 10-K, which was filed with the SEC on March 15, 2021. Certain reclassifications have been made to prior year amounts in the Notes to Consolidated Financial Statements to conform with current year presentation. These reclassifications had no impact on previously reported total assets, total liabilities, partners' capital, net income (loss) or cash flows from operating, investing or financing activities.

2.     i Revenues from Contracts with Customers
 i 
The following table presents the Partnership's Coal Royalty and Other segment revenues by major source:
For the Three Months Ended
June 30,
For the Six Months Ended June 30,
(In thousands)2021202020212020
Coal royalty revenues (1)
$ i 18,298 $ i 10,847 $ i 33,663 $ i 29,949 
Production lease minimum revenues (1)
 i 3,556  i 8,485  i 7,006  i 9,287 
Minimum lease straight-line revenues (1)
 i 4,869  i 4,987  i 10,965  i 8,796 
Property tax revenues i 1,587  i 761  i 3,056  i 2,360 
Wheelage revenues  i 1,844  i 1,584  i 3,625  i 3,788 
Coal overriding royalty revenues  i 976  i 683  i 2,835  i 2,005 
Lease amendment revenues i 772  i 890  i 1,640  i 1,733 
Aggregates royalty revenues i 456  i 271  i 910  i 847 
Oil and gas royalty revenues i 900  i 2,742  i 2,266  i 3,845 
Other revenues i 353  i 416  i 572  i 489 
Coal royalty and other revenues$ i 33,611 $ i 31,666 $ i 66,538 $ i 63,099 
Transportation and processing services revenues (2)
 i 2,182  i 1,938  i 4,374  i 4,447 
Total coal royalty and other segment revenues $ i 35,793 $ i 33,604 $ i 70,912 $ i 67,546 
(1)Beginning April 1, 2020 and effective January 1, 2020, certain revenues previously classified as coal royalty revenues are classified as production lease minimum revenues or minimum lease straight-line revenues due to contract modifications to certain leases that fixed consideration paid to the Partnership over a two year period.
 / 
(2)Transportation and processing services revenues from contracts with customers as defined under ASC 606 was $ i 1.2 million and $ i 1.3 million for the three months ended June 30, 2021 and 2020, respectively, and $ i  i 2.5 /  million for the six months ended June 30, 2021 and 2020. The remaining transportation and processing services revenues of $ i 0.9 million and $ i 0.7 million for the three months ended June 30, 2021 and 2020, respectively, and $ i 1.9 million and $ i 2.0 million for the six months ended June 30, 2021 and 2020, respectively, related to other NRP-owned infrastructure leased to and operated by third-party operators accounted for under other guidance. See Note 14. Financing Transaction for more information.
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NATURAL RESOURCE PARTNERS L.P.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—CONTINUED
(Unaudited)

 i 
The following table details the Partnership's Coal Royalty and Other segment receivables and liabilities resulting from contracts with customers:
June 30,December 31,
(In thousands)20212020
Receivables
Accounts receivable, net$ i 13,118 $ i 10,193 
Other current assets, net (1)
 i 3,320  i 3,307 
Other long-term assets, net (2)
 i 250  i 525 
Contract liabilities
Current portion of deferred revenue$ i 10,293 $ i 11,485 
Deferred revenue i 51,793  i 50,069 
(1)Other current assets, net includes short-term notes receivables from contracts with customers.
(2)Other long-term assets, net includes long-term lease amendment fee receivables from contracts with customers.
 / 
 i 
The following table shows the activity related to the Partnership's Coal Royalty and Other segment deferred revenue:
For the Six Months Ended June 30,
(In thousands)20212020
Balance at beginning of period (current and non-current)$ i 61,554 $ i 51,821 
Increase due to minimums and lease amendment fees i 7,938  i 42,611 
Recognition of previously deferred revenue( i 7,406)( i 32,144)
Balance at end of period (current and non-current)$ i 62,086 $ i 62,288 
 / 

 i 
The Partnership's non-cancelable annual minimum payments due under the lease terms of its coal and aggregates royalty leases are as follows as of June 30, 2021 (in thousands):
Lease Term (1)
Weighted Average Remaining Years
Annual Minimum Payments (2)
0 - 5 years i 4.6$ i 14,497 
5 - 10 years i 4.9 i 8,128 
10+ years i 14.0 i 28,463 
Total i 9.4$ i 51,088 
(1)Lease term does not include renewal periods.
 / 
(2)Annual minimum payments do not include $ i 9.7 million of the $ i 20.0 million of fixed consideration owed to NRP for the remainder of 2021 resulting from contract modifications entered into during the second quarter of 2020. Additionally, $ i 2.5 million of this remaining $ i 9.7 million relates to a coal infrastructure lease that is accounted for as a financing transaction. See Note 14. Financing Transaction for more information.

3.     i Common and Preferred Unit Distributions
The Partnership makes cash distributions to common and preferred unitholders on a quarterly basis, subject to approval by the Board of Directors of GP Natural Resource Partners LLC (the "Board of Directors"). NRP recognizes both common unit and preferred unit distributions on the date the distribution is declared.
Distributions made on the common units and the general partner's general partner ("GP") interest are made on a pro-rata basis in accordance with their relative percentage interests in the Partnership. The general partner is entitled to receive  i 2% of such distributions.

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NATURAL RESOURCE PARTNERS L.P.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—CONTINUED
(Unaudited)

Income (loss) available to common unitholders and the general partner is reduced by preferred unit distributions that accumulated during the period. NRP reduced net income (loss) available to common unitholders and the general partner by $ i 7.8 million and $ i 7.6 million during the three months ended June 30, 2021 and 2020, respectively, and $ i 15.6 million and $ i 15.1 million during the six months ended June 30, 2021 and 2020, respectively, as a result of accumulated preferred unit distributions earned during the period. In May 2021, the Partnership paid in kind one-half of the preferred unit distribution related to the three months ended March 31, 2021, which resulted in the issuance of an additional  i 3,863 preferred units during the three months ended June 30, 2021. In February 2021, the Partnership paid in kind one-half of the preferred unit distribution related to the three months ended December 31, 2020, which resulted in the issuance of an additional  i 3,806 preferred units during the three months ended March 31, 2021. In May 2020, the Partnership paid in kind one-half of the preferred unit distribution related to the three months ended March 31, 2020, and then redeemed all of these outstanding paid in kind preferred units on June 30, 2020.

 i 
The following table shows the cash distributions declared and paid to common and preferred unitholders during the six months ended June 30, 2021 and 2020, respectively:
Common UnitsPreferred Units
Date PaidPeriod Covered by DistributionDistribution per Unit
Total Distribution (1)
(In thousands)
Distribution per UnitTotal Distribution
(In thousands)
2021
February 2021October 1 - December 31, 2020$ i 0.45 $ i 5,630 $ i 15.00 $ i 3,806 
May 2021January 1 - March 31, 2021 i 0.45  i 5,672  i 15.00  i 3,864 
2020
February 2020October 1 - December 31, 2019$ i 0.45 $ i 5,630 $ i 30.00 $ i 7,500 
May 2020January 1 - March 31, 2020 i   i   i 15.00  i 3,750 
June 2020January 1 - March 31, 2020 i   i   i 15.45  i 3,863 
(1)Totals include the amount paid to NRP's general partner in accordance with the general partner's  i 2% general partner interest.
 / 

4.     i Net Income (Loss) Per Common Unit
Basic net income (loss) per common unit is computed by dividing net income (loss), after considering income attributable to preferred unitholders and the general partner’s general partner interest, by the weighted average number of common units outstanding. Diluted net income (loss) per common unit includes the effect of NRP's preferred units, warrants, and unvested unit-based awards if the inclusion of these items is dilutive.
The dilutive effect of the preferred units is calculated using the if-converted method. Under the if-converted method, the preferred units are assumed to be converted at the beginning of the period, and the resulting common units are included in the denominator of the diluted net income (loss) per unit calculation for the period being presented. Distributions declared in the period and undeclared distributions on the preferred units that accumulated during the period are added back to the numerator for purposes of the if-converted calculation. The calculation of diluted net income per common unit for the three months ended June 30, 2021 includes the assumed conversion of the preferred units. The calculation of diluted net income (loss) per common unit for the six months ended June 30, 2021 and the three and six months ended June 30, 2020 does not include the assumed conversion of the preferred units because the impact would have been anti-dilutive.
The dilutive effect of the warrants is calculated using the treasury stock method, which assumes that the proceeds from the exercise of these instruments are used to purchase common units at the average market price for the period. The calculation of diluted net income (loss) per common unit for the three and six months ended June 30, 2021 and 2020 does not include the net settlement of warrants to purchase  i  i  i  i 1.75 /  /  /  million common units at a strike price of $ i  i 22.81 /  or the net settlement of warrants to purchase  i  i  i  i 2.25 /  /  /  million common units with a strike price of $ i  i 34.00 /  because the impact would have been anti-dilutive.
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NATURAL RESOURCE PARTNERS L.P.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—CONTINUED
(Unaudited)

 i 
The following tables reconcile the numerator and denominator of the basic and diluted net income (loss) per common unit computations and calculates basic and diluted net income (loss) per common unit:
 For the Three Months Ended
June 30,
For the Six Months Ended June 30,
(In thousands, except per unit data)2021202020212020
Allocation of net income (loss)
Net income (loss)$ i 15,382 $( i 125,501)$ i 23,763 $( i 106,722)
Less: income attributable to preferred unitholders( i 7,842)( i 7,613)( i 15,569)( i 15,113)
Net income (loss) attributable to common unitholders and the general partner$ i 7,540 $( i 133,114)$ i 8,194 $( i 121,835)
Add (less): net loss (income) attributable to the general partner( i 151) i 2,662 ( i 164) i 2,437 
Net income (loss) attributable to common unitholders$ i 7,389 $( i 130,452)$ i 8,030 $( i 119,398)
Basic net income (loss) per common unit
Weighted average common units—basic i 12,351  i 12,261  i 12,322  i 12,261 
Basic net income (loss) per common unit$ i 0.60 $( i 10.64)$ i 0.65 $( i 9.74)
Diluted net income (loss) per common unit
Weighted average common units—basic  i 12,351  i 12,261  i 12,322  i 12,261 
Plus: dilutive effect of preferred units i 14,351  i   i   i  
Plus: dilutive effect of unvested unit-based awards i 119  i   i 117  i  
Weighted average common units—diluted i 26,821  i 12,261  i 12,439  i 12,261 
Net income (loss)$ i 15,382 $( i 125,501)$ i 23,763 $( i 106,722)
Less: income attributable to preferred unitholders— ( i 7,613)( i 15,569)( i 15,113)
Diluted net income (loss) attributable to common unitholders and the general partner$ i 15,382 $( i 133,114)$ i 8,194 $( i 121,835)
Add (less): diluted net loss (income) attributable to the general partner ( i 308) i 2,662 ( i 164) i 2,437 
Diluted net income (loss) attributable to common unitholders$ i 15,074 $( i 130,452)$ i 8,030 $( i 119,398)
Diluted net income (loss) per common unit$ i 0.56 $( i 10.64)$ i 0.65 $( i 9.74)
 / 


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NATURAL RESOURCE PARTNERS L.P.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—CONTINUED
(Unaudited)

5.     i Segment Information
The Partnership's segments are strategic business units that offer distinct products and services to different customers in different geographies within the U.S. and that are managed accordingly. NRP has the following  i two operating segments:
Coal Royalty and Other—consists primarily of coal royalty properties and coal-related transportation and processing assets. Other assets include industrial mineral royalty properties, aggregates royalty properties, oil and gas royalty properties and timber. The Partnership's coal reserves are primarily located in Appalachia, the Illinois Basin and the Northern Powder River Basin in the United States. The Partnership's industrial minerals and aggregates properties are located in various states across the United States. The Partnership's oil and gas royalty assets are primarily located in Louisiana and its timber assets are primarily located in West Virginia.
Soda Ash—consists of the Partnership's  i 49% non-controlling equity interest in Ciner Wyoming, a trona ore mining operation and soda ash refinery in the Green River Basin of Wyoming. Ciner Wyoming mines trona and processes it into soda ash that is sold both domestically and internationally to the glass and chemicals industries.
Direct segment costs and certain other costs incurred at the corporate level that are identifiable and that benefit the Partnership's segments are allocated to the operating segments accordingly. These allocated costs generally include salaries and benefits, insurance, property taxes, legal, royalty, information technology and shared facilities services and are included in operating and maintenance expenses on the Partnership's Consolidated Statements of Comprehensive Income (Loss).
Corporate and Financing includes functional corporate departments that do not earn revenues. Costs incurred by these departments include interest and financing, corporate headquarters and overhead, centralized treasury, legal and accounting and other corporate-level activity not specifically allocated to a segment and are included in general and administrative expenses on the Partnership's Consolidated Statements of Comprehensive Income (Loss).
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NATURAL RESOURCE PARTNERS L.P.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—CONTINUED
(Unaudited)

 i 
The following table summarizes certain financial information for each of the Partnership's business segments:
Operating Segments
(In thousands)Coal Royalty and OtherSoda AshCorporate and FinancingTotal
For the Three Months Ended June 30, 2021
Revenues$ i 35,793 $ i 2,601 $ i  $ i 38,394 
Gain on asset sales and disposals i 116  i   i   i 116 
Operating and maintenance expenses i 5,135  i 35  i   i 5,170 
Depreciation, depletion and amortization i 4,871  i   i   i 4,871 
General and administrative expenses i   i   i 3,388  i 3,388 
Asset impairments i 16  i   i   i 16 
Interest expense, net i 1  i   i 9,682  i 9,683 
Net income (loss) i 25,886  i 2,566 ( i 13,070) i 15,382 
For the Three Months Ended June 30, 2020
Revenues$ i 33,604 $( i 3,058)$ i  $ i 30,546 
Gain on asset sales and disposals i 465  i   i   i 465 
Operating and maintenance expenses i 8,188  i 29  i   i 8,217 
Depreciation, depletion and amortization i 2,062  i   i   i 2,062 
General and administrative expenses i   i   i 3,621  i 3,621 
Asset impairment i 132,283  i   i   i 132,283 
Interest expense, net i 15  i   i 10,314  i 10,329 
Net loss( i 108,479)( i 3,087)( i 13,935)( i 125,501)
For the Six Months Ended June 30, 2021
Revenues $ i 70,912 $ i 4,574 $ i  $ i 75,486 
Gain on asset sales and disposals i 175  i   i   i 175 
Operating and maintenance expenses i 10,667  i 55  i   i 10,722 
Depreciation, depletion and amortization  i 9,963  i   i   i 9,963 
General and administrative expenses i   i   i 7,498  i 7,498 
Asset impairments i 4,059  i   i   i 4,059 
Interest expense, net i 24  i   i 19,632  i 19,656 
Net income (loss) i 46,374  i 4,519 ( i 27,130) i 23,763 
For the Six Months Ended June 30, 2020
Revenues $ i 67,546 $ i 3,214 $ i  $ i 70,760 
Gain on asset sales and disposals i 465  i   i   i 465 
Operating and maintenance expenses i 13,374  i 45  i   i 13,419 
Depreciation, depletion and amortization  i 4,074  i   i   i 4,074 
General and administrative expenses i   i   i 7,534  i 7,534 
Asset impairments i 132,283  i   i   i 132,283 
Interest expense, net i 15  i   i 20,622  i 20,637 
Net income (loss)( i 81,735) i 3,169 ( i 28,156)( i 106,722)
 / 

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NATURAL RESOURCE PARTNERS L.P.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—CONTINUED
(Unaudited)

6.     i Equity Investment
The Partnership accounts for its  i 49% investment in Ciner Wyoming using the equity method of accounting.  i Activity related to this investment is as follows:
For the Three Months Ended
June 30,
For the Six Months Ended June 30,
(In thousands)2021202020212020
Balance at beginning of period$ i 261,299 $ i 261,224 $ i 262,514 $ i 263,080 
Income (loss) allocation to NRP’s equity interests i 3,855 ( i 2,047) i 7,071  i 5,446 
Amortization of basis difference( i 1,254)( i 1,011)( i 2,497)( i 2,232)
Other comprehensive income  i 2,533  i 1,359  i 3,265  i 336 
Distribution i  ( i 7,105)( i 3,920)( i 14,210)
Balance at end of period$ i 266,433 $ i 252,420 $ i 266,433 $ i 252,420 
The following table represents summarized financial information for Ciner Wyoming as derived from their respective unaudited financial statements for the three and six months ended June 30, 2021 and 2020:
For the Three Months Ended
June 30,
For the Six Months Ended June 30,
(In thousands)2021202020212020
Net sales$ i 120,690 $ i 76,184 $ i 248,481 $ i 190,607 
Gross profit i 14,087  i 2,242  i 26,787  i 23,659 
Net income (loss) i 7,867 ( i 4,177) i 14,430  i 11,115 

7.     i  i Mineral Rights, Net  / 
 i 
The Partnership’s mineral rights consist of the following:
 June 30, 2021December 31, 2020
(In thousands)Carrying ValueAccumulated DepletionNet Book ValueCarrying ValueAccumulated DepletionNet Book Value
Coal properties$ i 781,376 $( i 355,252)$ i 426,124 $ i 785,623 $( i 346,773)$ i 438,850 
Aggregates properties i 8,995 ( i 3,006) i 5,989  i 9,039 ( i 2,819) i 6,220 
Oil and gas royalty properties i 12,354 ( i 8,854) i 3,500  i 12,354 ( i 8,593) i 3,761 
Other i 13,154 ( i 1,612) i 11,542  i 13,154 ( i 1,612) i 11,542 
Total mineral rights, net$ i 815,879 $( i 368,724)$ i 447,155 $ i 820,170 $( i 359,797)$ i 460,373 
 / 
Depletion expense related to the Partnership’s mineral rights is included in depreciation, depletion and amortization on its Consolidated Statements of Comprehensive Income (Loss) and totaled $ i 4.4 million and $ i 2.0 million for the three months ended June 30, 2021 and 2020, respectively, and $ i 9.2 million and $ i 3.9 million for the six months ended June 30, 2021 and 2020, respectively.

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NATURAL RESOURCE PARTNERS L.P.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—CONTINUED
(Unaudited)

During the six months ended June 30, 2021, the Partnership recorded $ i 4.1 million of impairment expense primarily due to lease termination that resulted in the full impairment of a coal property. During the three and six months ended June 30, 2020, the Partnership recorded $ i  i 132.3 /  million of expense to fully impair certain properties, primarily related to weakened coal markets that resulted in termination of certain coal leases, changes to lessee mining plans resulting in permanent moves off certain of our coal properties and decreased oil and gas drilling activity which negatively impacted the outlook for NRP's frac sand properties. The Partnership has developed procedures to evaluate its long-lived assets for possible impairment periodically or whenever events or changes in circumstances indicate an asset's net book value may not be recoverable. Potential events or circumstances include, but are not limited to, specific events such as a reduction in economically recoverable reserves or production ceasing on a property for an extended period. This analysis is based on historic, current and future performance and considers both quantitative and qualitative information. While the Partnership's impairment evaluation as of June 30, 2021 incorporated an estimated impact of the global COVID-19 pandemic, there is significant uncertainty as to the severity and duration of this disruption. If the impact is worse than we currently estimate, an additional impairment charge may be recognized in future periods.

8.     i Debt, Net
 i 
The Partnership's debt consists of the following:
June 30,December 31,
(In thousands)20212020
NRP LP debt:
 i 9.125% senior notes, with semi-annual interest payments in June and December, due June 2025, issued at par ("2025 Senior Notes")
$ i 300,000 $ i 300,000 
Opco debt:
Revolving credit facility$ i  $ i  
Senior Notes
 i 5.55% with semi-annual interest payments in June and December, with annual principal payments in June, due June 2023
$ i 4,730 $ i 7,094 
 i 4.73% with semi-annual interest payments in June and December, with annual principal payments in December, due December 2023
 i 18,013  i 18,013 
 i 5.82% with semi-annual interest payments in March and September, with annual principal payments in March, due March 2024
 i 38,053  i 50,738 
 i 8.92% with semi-annual interest payments in March and September, with annual principal payments in March, due March 2024
 i 12,035  i 16,047 
 i 5.03% with semi-annual interest payments in June and December, with annual principal payments in December, due December 2026
 i 68,524  i 68,524 
 i 5.18% with semi-annual interest payments in June and December, with annual principal payments in December, due December 2026
 i 17,464  i 17,464 
Total Opco Senior Notes$ i 158,819 $ i 177,880 
Total debt at face value$ i 458,819 $ i 477,880 
Net unamortized debt issuance costs( i 5,660)( i 6,381)
Total debt, net$ i 453,159 $ i 471,499 
Less: current portion of long-term debt( i 39,060)( i 39,055)
Total long-term debt, net$ i 414,099 $ i 432,444 
 / 

NRP LP Debt
2025 Senior Notes
The 2025 Senior Notes were issued under an Indenture dated as of April 29, 2019 (the "2025 Indenture"), bear interest at  i 9.125% per year and mature on June 30, 2025. Interest is payable semi-annually on June 30 and December 30.
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NATURAL RESOURCE PARTNERS L.P.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—CONTINUED
(Unaudited)

NRP and NRP Finance have the option to redeem the 2025 Senior Notes, in whole or in part, at any time on or after October 30, 2021, at the redemption prices (expressed as percentages of principal amount) of  i 104.563% for the 12-month period beginning October 30, 2021 i 102.281% for the 12-month period beginning October 30, 2022, and thereafter at  i 100.000%, together, in each case, with any accrued and unpaid interest to the date of redemption. Furthermore, before October 30, 2021, NRP may on any one or more occasions redeem up to  i 35% of the aggregate principal amount of the 2025 Senior Notes with the net proceeds of certain public or private equity offerings at a redemption price of  i 109.125% of the principal amount of 2025 Senior Notes, plus any accrued and unpaid interest, if any, to the date of redemption, if at least  i 65% of the aggregate principal amount of the 2025 Senior Notes issued under the 2025 Indenture remains outstanding immediately after such redemption and the redemption occurs within 180 days of the closing date of such equity offering. In the event of a change of control, as defined in the 2025 Indenture, the holders of the 2025 Senior Notes may require us to purchase their 2025 Senior Notes at a purchase price equal to  i 101% of the principal amount of the 2025 Senior Notes, plus accrued and unpaid interest, if any. The 2025 Senior Notes were issued at par.
The 2025 Senior Notes are the senior unsecured obligations of NRP and NRP Finance. The 2025 Senior Notes rank equal in right of payment to all existing and future senior unsecured debt of NRP and NRP Finance and senior in right of payment to any of NRP's subordinated debt. The 2025 Senior Notes are effectively subordinated in right of payment to all future secured debt of NRP and NRP Finance to the extent of the value of the collateral securing such indebtedness and are structurally subordinated in right of payment to all existing and future debt and other liabilities of our subsidiaries, including the Opco Credit Facility and each series of Opco’s existing senior notes. None of NRP's subsidiaries guarantee the 2025 Senior Notes. As of June 30, 2021 and December 31, 2020, NRP and NRP Finance were in compliance with the terms of the Indenture relating to their 2025 Senior Notes.
Opco Debt
All of Opco’s debt is guaranteed by its wholly owned subsidiaries and is secured by certain of the assets of Opco and its wholly owned subsidiaries, other than BRP LLC and NRP Trona LLC. As of June 30, 2021 and December 31, 2020, Opco was in compliance with the terms of the financial covenants contained in its debt agreements.
Opco Credit Facility
In April 2019, the Partnership entered into the Fourth Amendment (the “Fourth Amendment”) to the Opco Credit Facility (the "Opco Credit Facility"). The Fourth Amendment extended the term of the Opco Credit Facility until April 2023. Lender commitments under the Opco Credit Facility remain at $ i  i 100.0 /  million. The Opco Credit Facility contains financial covenants requiring Opco to maintain:
A leverage ratio of consolidated indebtedness to EBITDDA (as defined in the Opco Credit Facility) not to exceed  i 4.0x; provided, however, that if the Partnership increases its quarterly distribution to its common unitholders above $ i 0.45 per common unit, the maximum leverage ratio under the Opco Credit Facility will permanently decrease from  i 4.0x to  i 3.0x; and
a fixed charge coverage ratio of consolidated EBITDDA to consolidated fixed charges (consisting of consolidated interest expense and consolidated lease expense) of not less than  i 3.5 to 1.0.
During the three and six months ended June 30, 2021 and 2020, the Partnership did not have any borrowings outstanding under the Opco Credit Facility and had $ i  i 100.0 /  million in available borrowing capacity at both June 30, 2021 and December 31, 2020.
The Opco Credit Facility is collateralized and secured by liens on certain of Opco’s assets with carrying values of $ i 356.3 million and $ i 364.5 million classified as mineral rights, net and other long-term assets, net on the Partnership’s Consolidated Balance Sheets as of June 30, 2021 and December 31, 2020, respectively.
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NATURAL RESOURCE PARTNERS L.P.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—CONTINUED
(Unaudited)

Opco Senior Notes   
Opco has issued several series of private placement senior notes (the "Opco Senior Notes") with various interest rates and principal due dates. As of June 30, 2021 and December 31, 2020, the Opco Senior Notes had cumulative principal balances of $ i 158.8 million and $ i 177.9 million, respectively. Opco made mandatory principal payments of $ i  i 19.1 /  million during the six months ended June 30, 2021 and 2020.
The  i 8.92% Opco Senior Notes also provides that in the event that Opco’s leverage ratio of consolidated indebtedness to consolidated EBITDDA (as defined in the Note Purchase Agreements) exceeds  i 3.75 to 1.00 at the end of any fiscal quarter, then in addition to all other interest accruing on these notes, additional interest in the amount of  i 2.00% per annum shall accrue on the notes for the two succeeding quarters and for as long thereafter as the leverage ratio remains above  i 3.75 to 1.00. Opco has not exceeded the  i 3.75 to 1.00 ratio at the end of any fiscal quarter through June 30, 2021.
9.     i Fair Value Measurements
Fair Value of Financial Assets and Liabilities
The Partnership’s financial assets and liabilities consist of cash and cash equivalents, a contract receivable and debt. The carrying amounts reported on the Consolidated Balance Sheets for cash and cash equivalents approximate fair value due to their short-term nature. The Partnership uses available market data and valuation methodologies to estimate the fair value of its debt and contract receivable.
 i 
The following table shows the carrying value and estimated fair value of the Partnership's debt and contract receivable:
 June 30, 2021December 31, 2020
(In thousands)Fair Value Hierarchy LevelCarrying
Value
Estimated
Fair Value
Carrying
Value
Estimated
Fair Value
Debt:
NRP 2025 Senior Notes1$ i 295,697 $ i 295,500 $ i 295,160 $ i 274,500 
Opco Senior Notes (1)
3 i 157,462  i 156,437  i 176,339  i 162,760 
Opco Credit Facility3 i   i   i   i  
Assets:
Contract receivable, net (current and
long-term) (2)
3$ i 34,668 $ i 26,536 $ i 35,313 $ i 27,025 
(1)The fair value of the Opco Senior Notes are estimated by management using quotations obtained for the NRP 2025 Senior Notes on the closing trading prices near period end, which were at  i 99% and  i 92% of par value at June 30, 2021 and December 31, 2020, respectively.
 / 
(2)The fair value of the Partnership's contract receivable is determined based on the present value of future cash flow projections related to the underlying asset at a discount rate of  i  i 15 / % at June 30, 2021 and December 31, 2020.
NRP has embedded derivatives in the preferred units related to certain conversion options, redemption features and the change of control provision that are accounted for separately from the preferred units as assets and liabilities at fair value on the Partnership's Consolidated Balance Sheets. Level 3 valuation of the embedded derivatives are based on numerous factors including the likelihood of the event occurring. The embedded derivatives are revalued quarterly and changes in their fair value would be recorded in other expenses, net on the Partnership's Consolidated Statements of Comprehensive Income (Loss). The embedded derivatives had  i  i zero /  value as of June 30, 2021 and December 31, 2020.

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NATURAL RESOURCE PARTNERS L.P.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—CONTINUED
(Unaudited)

10.     i Related Party Transactions
Affiliates of our General Partner
The Partnership’s general partner does not receive any management fee or other compensation for its management of NRP. However, in accordance with the partnership agreement, the general partner and its affiliates are reimbursed for services provided to the Partnership and for expenses incurred on the Partnership’s behalf. Employees of Quintana Minerals Corporation ("QMC") and Western Pocahontas Properties Limited Partnership ("WPPLP"), affiliates of the Partnership, provide their services to manage the Partnership's business. QMC and WPPLP charge the Partnership the portion of their employee salary and benefits costs related to their employee services provided to NRP. These QMC and WPPLP employee management service costs are presented as operating and maintenance expenses and general and administrative expenses on the Partnership's Consolidated Statements of Comprehensive Income (Loss). NRP also reimburses overhead costs incurred by its affiliates, including Quintana Infrastructure Development ("QID"), to manage the Partnership's business. These overhead costs include certain rent, information technology, administration of employee benefits and other corporate services incurred by or on behalf of the Partnership’s general partner and its affiliates and are presented as operating and maintenance expenses and general and administrative expenses on the Partnership's Consolidated Statements of Comprehensive Income (Loss).
 i 
Direct general and administrative expenses charged to the Partnership by QMC, WPPLP and QID are included on the Partnership's Consolidated Statement of Comprehensive Income (Loss) as follows:
For the Three Months Ended
June 30,
For the Six Months Ended June 30,
(In thousands)2021202020212020
Operating and maintenance expenses$ i 1,645 $ i 1,596 $ i 3,252 $ i 3,300 
General and administrative expenses i 1,115  i 1,119  i 2,301  i 2,321 
 / 
The Partnership had accounts payable on its Consolidated Balance Sheets of $ i  i 0.4 /  million to QMC and $ i  i 0.3 /  million to WPPLP at both June 30, 2021 and December 31, 2020.
During the three months ended June 30, 2021 and 2020, the Partnership recognized $ i 1.0 million and $ i 0.1 million, respectively, in operating and maintenance expenses on its Consolidated Statements of Comprehensive Income (Loss) related to an overriding royalty agreement with WPPLP. These amounts were $ i 1.2 million and $ i 0.2 million during the six months ended June 30, 2021 and 2020, respectively. At June 30, 2021 and December 31, 2020 the Partnership had $ i 0.0 million and $ i 0.3 million, respectively, of other long-term assets, net on its Consolidated Balance Sheets related to a prepaid royalty for this agreement.
11.     i Major Customers
 i 
Revenues from customers that exceeded 10 percent of total revenues for any of the periods presented below are as follows:
 For the Three Months Ended June 30, For the Six Months Ended June 30,
 2021202020212020
(In thousands)RevenuesPercentRevenuesPercentRevenuesPercentRevenuesPercent
Foresight Energy Resources LLC ("Foresight") (1) (2)
$ i 8,562  i 22 %$ i 9,799  i 32 %$ i 17,134  i 23 %$ i 18,460  i 26 %
Alpha Metallurgical Resources, Inc. (1)
 i 8,851  i 23 % i 7,450  i 24 % i 16,894  i 22 % i 16,021  i 23 %
(1)Revenues from Foresight and Alpha Metallurgical Resources, Inc. (formerly Contura Energy Inc.) are included within the Partnership's Coal Royalty and Other segment.
 / 
(2)In June 2020, the Partnership entered into lease amendments with Foresight pursuant to which Foresight agreed to pay NRP fixed cash payments to satisfy all obligations arising out of the existing various coal mining leases and transportation infrastructure fee agreements between the Partnership and Foresight for calendar years 2020 and 2021.
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NATURAL RESOURCE PARTNERS L.P.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—CONTINUED
(Unaudited)

12.     i Commitments and Contingencies
NRP is involved, from time to time, in various legal proceedings arising in the ordinary course of business. While the ultimate results of these proceedings cannot be predicted with certainty, Partnership management believes these ordinary course matters will not have a material effect on the Partnership’s financial position, liquidity or operations.
13.     i Unit-Based Compensation
The Partnership's unit-based awards granted in 2021 and 2020 were valued using the closing price of NRP's common units as of the grant date. The grant date fair value of these awards granted during the six months ended June 30, 2021 and 2020 were $ i 3.8 million and $ i 3.5 million, respectively. Total unit-based compensation expense associated with these awards was $ i 0.6 million and $ i 0.9 million for the three months ended June 30, 2021 and 2020, respectively, and $ i  i 1.7 /  million for the six months ended June 30, 2021 and 2020 and is included in general and administrative expenses and operating and maintenance expenses on the Partnership's Consolidated Statements of Comprehensive Income (Loss). The unamortized cost associated with unvested outstanding awards as of June 30, 2021 is $ i 5.2 million, which is to be recognized over a weighted average period of  i 1.9 years. The unamortized cost associated with unvested outstanding awards as of December 31, 2020 was $ i 3.7 million.
 i 
A summary of the unit activity in the outstanding grants during 2021 is as follows:
(In thousands)Common UnitsWeighted Average Exercise Price
Outstanding at January 1, 2021 i 355 $ i 26.20 
Granted i 219 $ i 17.31 
Fully vested and issued( i 129)$ i 21.38 
Forfeitures( i 34)$ i 26.00 
Outstanding at June 30, 2021 i 411 $ i 23.00 
 / 

14.     i Financing Transaction
The Partnership owns rail loadout and associated infrastructure at the Sugar Camp mine in the Illinois Basin operated by a subsidiary of Foresight. The infrastructure at the Sugar Camp mine is leased to a subsidiary of Foresight and is accounted for as a financing transaction (the "Sugar Camp lease"). The Sugar Camp lease expires in 2032 with renewal options for up to  i 80 additional years. Minimum payments are $ i 5.0 million per year through the end of the lease term. The $ i 5.0 million due to the Partnership in 2021 is included in the fixed cash payments from Foresight resulting from contract modifications entered into during the second quarter of 2020 as discussed in Note 11. Major Customers. The Partnership is also entitled to variable payments in the form of throughput fees determined based on the amount of coal transported and processed utilizing the Partnership's assets. In the event the Sugar Camp lease is renewed beyond 2032, payments become a fixed $ i 10 thousand per year for the remainder of the renewed term.

15.     i Credit Losses
The Partnership is exposed to credit losses through collection of its short-term trade receivables resulting from contracts with customers and a long-term receivable resulting from a financing transaction with a customer. The Partnership records an allowance for current expected credit losses on these receivables based on the loss-rate method. NRP assessed the likelihood of collection of its receivables utilizing historical loss rates, current market conditions that included the estimated impact of the global COVID-19 pandemic, industry and macroeconomic factors, reasonable and supportable forecasts and facts or circumstances of individual customers and properties. Examples of these facts or circumstances include, but are not limited to, contract disputes or renegotiations with the customer and evaluation of short and long-term economic viability of the contracted property. For its long-term contract receivable, management reverts to the historical loss experience immediately after the reasonable and supportable forecast period ends.

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NATURAL RESOURCE PARTNERS L.P.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—CONTINUED
(Unaudited)

As of June 30, 2021 and December 31, 2020, NRP had the following current expected credit loss (“CECL”) allowance related to its receivables and long-term contract receivable:
 i 
June 30, 2021December 31, 2020
(In thousands)GrossCECL AllowanceNetGrossCECL AllowanceNet
Receivables$ i 20,921 $( i 2,029)$ i 18,892 $ i 18,512 $( i 2,358)$ i 16,154 
Long-term contract receivable i 33,680 ( i 1,166) i 32,514  i 34,818 ( i 1,554) i 33,264 
Total$ i 54,601 $( i 3,195)$ i 51,406 $ i 53,330 $( i 3,912)$ i 49,418 
 / 

NRP recorded $( i 1.1) million and $ i 0.1 million in operating and maintenance expenses on its Consolidated Statements of Comprehensive Income (Loss) related to the change in the CECL allowance during the three months ended June 30, 2021 and 2020, respectively, and $( i 0.7) million and $( i 0.3) million during the six months ended June 30, 2021 and 2020, respectively.

NRP has procedures in place to monitor its ongoing credit exposure through timely review of counterparty balances against contract terms and due dates, account and financing receivable reconciliation, bankruptcy monitoring, lessee audits and dispute resolution. The Partnership may employ legal counsel or collection specialists to pursue recovery of defaulted receivables.

16.     i Subsequent Events
The following represents material events that have occurred subsequent to June 30, 2021 through the time of the Partnership’s filing of its Quarterly Report on Form 10-Q with the SEC:
Common Unit and Preferred Unit Distributions
In August 2021, the Board of Directors declared a distribution of $ i 0.45 per common unit with respect to the second quarter of 2021. The Board of Directors also declared a distribution on NRP's preferred units with respect to the second quarter of 2021 to be paid one-half in cash equal to $ i 3.92 million and one-half in kind through the issuance of  i 3,921 additional preferred units.
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ITEM 2. MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS
The following review of operations for the three and six month periods ended June 30, 2021 and 2020 should be read in conjunction with our Consolidated Financial Statements and the Notes to Consolidated Financial Statements included in this Form 10-Q and with the Consolidated Financial Statements, Notes to Consolidated Financial Statements and Management’s Discussion and Analysis included in the Natural Resource Partners L.P. Annual Report on Form 10-K for the year ended December 31, 2020.
As used herein, unless the context otherwise requires: "we," "our," "us" and the "Partnership" refer to Natural Resource Partners L.P. and, where the context requires, our subsidiaries. References to "NRP" and "Natural Resource Partners" refer to Natural Resource Partners L.P. only, and not to NRP (Operating) LLC or any of Natural Resource Partners L.P.’s subsidiaries. References to "Opco" refer to NRP (Operating) LLC, a wholly owned subsidiary of NRP, and its subsidiaries. NRP Finance Corporation ("NRP Finance") is a wholly owned subsidiary of NRP and a co-issuer with NRP on the 9.125% senior notes due 2025 (the "2025 Senior Notes").
INFORMATION REGARDING FORWARD-LOOKING STATEMENTS
Statements included in this 10-Q may constitute forward-looking statements. In addition, we and our representatives may from time to time make other oral or written statements which are also forward-looking statements. Such forward-looking statements include, among other things, statements regarding: the effects of the global COVID-19 pandemic; our business strategy; our liquidity and access to capital and financing sources; our financial strategy; prices of and demand for coal, trona and soda ash, and other natural resources; estimated revenues, expenses and results of operations; projected production levels by our lessees; Ciner Wyoming LLC’s ("Ciner Wyoming's") trona mining and soda ash refinery operations; distributions from our soda ash joint venture; the impact of governmental policies, laws and regulations, as well as regulatory and legal proceedings involving us, and of scheduled or potential regulatory or legal changes; and global and U.S. economic conditions.
These forward-looking statements speak only as of the date hereof and are made based upon our current plans, expectations, estimates, assumptions and beliefs concerning future events impacting us and involve a number of risks and uncertainties. We caution that forward-looking statements are not guarantees and that actual results could differ materially from those expressed or implied in the forward-looking statements. You should not put undue reliance on any forward-looking statements. See "Item 1A. Risk Factors" included in this Form 10-Q and in our Annual Report on Form 10-K for the year ended December 31, 2020 for important factors that could cause our actual results of operations or our actual financial condition to differ.
NON-GAAP FINANCIAL MEASURES
Adjusted EBITDA
Adjusted EBITDA is a non-GAAP financial measure that we define as net income (loss) less equity earnings from unconsolidated investment, net income attributable to non-controlling interest and gain on reserve swap; plus total distributions from unconsolidated investment, interest expense, net, debt modification expense, loss on extinguishment of debt, depreciation, depletion and amortization and asset impairments. Adjusted EBITDA should not be considered an alternative to, or more meaningful than, net income or loss, net income or loss attributable to partners, operating income, cash flows from operating activities or any other measure of financial performance presented in accordance with GAAP as measures of operating performance, liquidity or ability to service debt obligations. There are significant limitations to using Adjusted EBITDA as a measure of performance, including the inability to analyze the effect of certain recurring items that materially affect our net income, the lack of comparability of results of operations of different companies and the different methods of calculating Adjusted EBITDA reported by different companies. In addition, Adjusted EBITDA presented below is not calculated or presented on the same basis as Consolidated EBITDA as defined in our partnership agreement or Consolidated EBITDDA as defined in Opco's debt agreements. For a description of Opco's debt agreements, see Note 8. Debt, Net in the Notes to Consolidated Financial Statements included herein as well as in "Item 8. Financial Statements and Supplementary Data—Note 11. Debt, Net" in our Annual Report on Form 10-K for the year ended December 31, 2020. Adjusted EBITDA is a supplemental performance measure used by our management and by external users of our financial statements, such as investors, commercial banks, research analysts and others to assess the financial performance of our assets without regard to financing methods, capital structure or historical cost basis.

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Distributable Cash Flow
Distributable cash flow ("DCF") represents net cash provided by (used in) operating activities of continuing operations plus distributions from unconsolidated investment in excess of cumulative earnings, proceeds from asset sales and disposals, including sales of discontinued operations, and return of long-term contract receivables; less maintenance capital expenditures and distributions to non-controlling interest. DCF is not a measure of financial performance under GAAP and should not be considered as an alternative to cash flows from operating, investing or financing activities. DCF may not be calculated the same for us as for other companies. In addition, DCF presented below is not calculated or presented on the same basis as distributable cash flow as defined in our partnership agreement, which is used as a metric to determine whether we are able to increase quarterly distributions to our common unitholders. DCF is a supplemental liquidity measure used by our management and by external users of our financial statements, such as investors, commercial banks, research analysts and others to asses our ability to make cash distributions and repay debt.
Free Cash Flow
Free cash flow ("FCF") represents net cash provided by (used in) operating activities of continuing operations plus distributions from unconsolidated investment in excess of cumulative earnings and return of long-term contract receivables; less maintenance and expansion capital expenditures, cash flow used in acquisition costs classified as investing or financing activities. FCF is calculated before mandatory debt repayments. FCF is not a measure of financial performance under GAAP and should not be considered as an alternative to cash flows from operating, investing or financing activities. FCF may not be calculated the same for us as for other companies. FCF is a supplemental liquidity measure used by our management and by external users of our financial statements, such as investors, commercial banks, research analysts and others to assess our ability to make cash distributions and repay debt.
Introduction
The following discussion and analysis presents management's view of our business, financial condition and overall performance. Our discussion and analysis consists of the following subjects:
Executive Overview
Results of Operations
Liquidity and Capital Resources
Off-Balance Sheet Transactions
Related Party Transactions
Summary of Critical Accounting Estimates
Recent Accounting Standards
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Executive Overview
We are a diversified natural resource company engaged principally in the business of owning, managing and leasing a diversified portfolio of mineral properties in the United States, including interests in coal and other natural resources and own a non-controlling 49% interest in Ciner Wyoming, a trona ore mining and soda ash production business. Our common units trade on the New York Stock Exchange under the symbol "NRP." Our business is organized into two operating segments:
Coal Royalty and Other—consists primarily of coal royalty properties and coal-related transportation and processing assets. Other assets include industrial mineral royalty properties, aggregates royalty properties, oil and gas royalty properties and timber. Our coal reserves are primarily located in Appalachia, the Illinois Basin and the Northern Powder River Basin in the United States. Our industrial minerals and aggregates properties are located in various states across the United States, our oil and gas royalty assets are primarily located in Louisiana and our timber assets are primarily located in West Virginia.
Soda Ash—consists of our 49% non-controlling equity interest in Ciner Wyoming, a trona ore mining and soda ash production business located in the Green River Basin of Wyoming. Ciner Wyoming mines the trona and processes it into soda ash that is sold both domestically and internationally into the glass and chemicals industries.
In addition to actively managing its currently producing coal and hard mineral properties over the last year, we continue working to identify alternative revenue sources across our large portfolio of land, mineral and timber assets. The types of opportunities we are exploring include the sequestration of carbon dioxide underground and in standing forests, and the generation of electricity using geothermal, solar and wind energy. While the timing and likelihood of cash flows being realized from any of these activities is highly uncertain, we believe our large ownership footprint throughout the United States will provide opportunities to create value in this regard with minimal capital investment.
Corporate and Financing includes functional corporate departments that do not earn revenues. Costs incurred by these departments include interest and financing, corporate headquarters and overhead, centralized treasury, legal and accounting and other corporate-level activity not specifically allocated to a segment.
Our financial results by segment for the six months ended June 30, 2021 are as follows:
Operating Segments
(In thousands)Coal Royalty and OtherSoda AshCorporate and FinancingTotal
Revenues and other income$71,087 $4,574 $— $75,661 
Net income (loss)$46,374 $4,519 $(27,130)$23,763 
Adjusted EBITDA (1)
$60,420 $3,865 $(7,498)$56,787 
Cash flow provided by (used in) continuing operations
Operating activities$57,990 $3,853 $(25,259)$36,584 
Investing activities$1,257 $— $— $1,257 
Financing activities$(1,132)$— $(38,591)$(39,723)
Distributable cash flow (1)
$59,247 $3,853 $(25,259)$37,841 
Free cash flow (1)
$58,072 $3,853 $(25,259)$36,666 
(1)See "—Results of Operations" below for reconciliations to the most comparable GAAP financial measures.
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Current Results/Market Commentary
Business Outlook and Quarterly Distributions

Demand for metallurgical and thermal coals and soda ash continue to rebound from their lows in 2020 caused by the global COVID-19 pandemic. We generated $36.7 million of free cash flow during the six months ended June 30, 2021, and ended the quarter with $197.9 million of liquidity consisting of $97.9 million of cash and cash equivalents and $100.0 million of borrowing capacity under our Opco Credit Facility.

Despite our steady liquidity, our consolidated leverage ratio has risen since early 2020 and was 4.6x at June 30, 2021. The indenture governing our 2025 parent company notes restricts us from paying more than one-half of the quarterly distribution on our preferred units in cash if our consolidated leverage ratio exceeds 3.75x. Accordingly, the Board of Directors of our general partner has declared a distribution on our preferred units to be paid one-half in kind through the issuance of additional preferred units (“PIK units”) for the past four quarters. We expect our leverage ratio to now begin to decline as we continue to pay down debt. Under the terms of our partnership agreement, to the extent our consolidated leverage ratio remains above 3.75x into 2022 and we therefore remain unable to redeem any outstanding paid-in-kind preferred units, we may be required to temporarily suspend distributions on our common units until the leverage ratio drops below 3.75x and the outstanding paid-in-kind preferred units are redeemed.
Future distributions on NRP's common and preferred units will be determined on a quarterly basis by the Board of Directors. The Board of Directors considers numerous factors each quarter in determining cash distributions, including profitability, cash flow, debt service obligations, covenants in our debt and partnership agreements, market conditions and outlook, estimated unitholder income tax liability and the level of cash reserves that the Board determines is necessary for future operating and capital needs.
Coal Royalty and Other Business Segment
Metallurgical coal markets have rebounded from the lows seen in 2020 and the outlook remains strong as steel demand driven by global economic recovery is more than offsetting challenges related to the COVID-19 pandemic. Domestic and export thermal coal markets have significantly improved from the lows seen in 2020, but still face ongoing negative effects of the COVID-19 pandemic and the long-term challenges of lower electricity demand, competition from natural gas, and the secular shift to renewable energy. However, NRP does not have significant sensitivity to thermal coal price movements this year since the substantial majority of NRP's thermal cash flows are fixed through 2021 pursuant to a contract with Foresight Energy that went into effect as they emerged from bankruptcy last year.

Our lessees sold 13.1 million tons of coal from our properties in the first six months of 2021 and we derived approximately 60% of our coal royalty revenues and approximately 45% of our coal royalty sales volumes from metallurgical coal during the same period.
Soda Ash Business Segment
Ciner Wyoming's business continues to recover to pre-COVID-19 levels. While we believe Ciner Wyoming's facility is competitively positioned as one of the lowest cost producers of soda ash in the world, we expect the market to remain volatile as a result of ongoing uncertainties with the COVID-19 pandemic.
Revenues and other income in the first six months of 2021 were higher by $1.4 million compared to the prior year period primarily as a result of an increase in sales volumes as demand for soda ash rebounded from lows caused by the global COVID-19 pandemic.
In order to have financial flexibility during the COVID-19 pandemic, Ciner Wyoming suspended its regular quarterly distributions in the third quarter of 2020. Ciner Wyoming will continue to evaluate, on a quarterly basis, whether to reinstate the distribution. Ciner Wyoming’s ability to pay future quarterly distributions will be dependent in part on its cash reserves, liquidity, total debt levels and anticipated capital expenditures. Distributions received from Ciner Wyoming were $3.9 million in the first six months of 2021 as compared to $14.2 million in the first six months of 2020. Although Ciner Wyoming made a special distribution to its members in the first quarter of 2021, we do not believe Ciner Wyoming will resume regular quarterly distributions until they have greater visibility and confidence in global soda markets.
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When considering the significant investment required by Ciner Wyoming’s previously announced expansion project and the infrastructure improvements designed to increase overall efficiency, combined with the COVID-19 pandemic’s negative impact on Ciner Wyoming’s financial results, Ciner Wyoming has reprioritized the timing of the significant capital expenditure items in order to increase financial and liquidity flexibility until it has more clarity and visibility into the ongoing impact of the COVID-19 pandemic on its business.

Results of Operations
Second Quarter of 2021 and 2020 Compared
Revenues and Other Income
The following table includes our revenues and other income by operating segment:
For the Three Months Ended June 30,IncreasePercentage
Change
Operating Segment (In thousands)20212020
Coal Royalty and Other$35,909 $34,069 $1,840 %
Soda Ash 2,601 (3,058)5,659 185 %
Total$38,510 $31,011 $7,499 24 %

The changes in revenues and other income is discussed for each of the operating segments below:
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Coal Royalty and Other
The following table presents coal sales volumes, coal royalty revenue per ton and coal royalty revenues by major coal producing region, the significant categories of other revenues and other income:
 For the Three Months Ended June 30,Increase
(Decrease)
Percentage
Change
(In thousands, except per ton data)20212020
Coal sales volumes (tons)
Appalachia
Northern 405 87 318 366 %
Central2,975 2,463 512 21 %
Southern316 426 (110)(26)%
Total Appalachia3,696 2,976 720 24 %
Illinois Basin2,640 578 2,062 357 %
Northern Powder River Basin185 340 (155)(46)%
Total coal sales volumes6,521 3,894 2,627 67 %
Coal royalty revenue per ton
Appalachia
Northern $4.45 $2.74 $1.71 62 %
Central4.62 4.04 0.58 14 %
Southern7.63 4.96 2.67 54 %
Illinois Basin2.01 1.97 0.04 %
Northern Powder River Basin4.15 3.15 1.00 32 %
Combined average coal royalty revenue per ton3.69 3.73 (0.04)(1)%
Coal royalty revenues
Appalachia
Northern $1,804 $238 $1,566 658 %
Central13,756 9,951 3,805 38 %
Southern2,410 2,111 299 14 %
Total Appalachia17,970 12,300 5,670 46 %
Illinois Basin5,300 1,137 4,163 366 %
Northern Powder River Basin768 1,071 (303)(28)%
Unadjusted coal royalty revenues24,038 14,508 9,530 66 %
Coal royalty adjustment for minimum leases (1)
(5,740)(3,661)(2,079)(57)%
Total coal royalty revenues$18,298 $10,847 $7,451 69 %
Other revenues
Production lease minimum revenues (1)
$3,556 $8,485 $(4,929)(58)%
Minimum lease straight-line revenues (1)
4,869 4,987 (118)(2)%
Property tax revenues1,587 761 826 109 %
Wheelage revenues 1,844 1,584 260 16 %
Coal overriding royalty revenues 976 683 293 43 %
Lease amendment revenues772 890 (118)(13)%
Aggregates royalty revenues456 271 185 68 %
Oil and gas royalty revenues900 2,742 (1,842)(67)%
Other revenues353 416 (63)(15)%
Total other revenues$15,313 $20,819 $(5,506)(26)%
Coal royalty and other $33,611 $31,666 $1,945 %
Transportation and processing services revenues 2,182 1,938 244 13 %
Gain on asset sales and disposals116 465 (349)(75)%
Total Coal Royalty and Other segment revenues and other income$35,909 $34,069 $1,840 %
(1)Beginning April 1, 2020 and effective January 1, 2020, certain revenues previously classified as coal royalty revenues are classified as production lease minimum revenues or minimum lease straight-line revenues due to contract modifications with Foresight that fixed consideration paid to us over a two-year period.
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Coal Royalty Revenues
Approximately 65% of coal royalty revenues and approximately 50% of coal royalty sales volumes were derived from metallurgical coal during the three months ended June 30, 2021. Total coal royalty revenues increased $7.5 million as compared to the prior year quarter as a result of increased demand for both metallurgical and thermal coals from their lows in 2020 caused by the global COVID-19 pandemic. The discussion by region is as follows:
Appalachia: Coal royalty revenues increased $5.7 million primarily due to a 24% increase in sales volumes in addition to higher sales prices as compared to the prior year quarter.
Illinois Basin: Coal royalty revenues increased $4.2 million primarily due to a 357% increase in sales volumes for the three months ended June 30, 2021 as compared to the prior year quarter. In the second quarter of 2020, we entered into lease amendments with Foresight pursuant to which Foresight agreed to pay us fixed cash payments to satisfy all obligations arising out of the existing various coal mining leases and transportation infrastructure fee agreements between us and Foresight for calendar years 2020 and 2021. As a result of these amendments, actual revenues recognized from Foresight were flat period-over-period.
Northern Powder River Basin: Coal royalty revenues decreased $0.3 million primarily due to a 46% decrease in sales volumes as our lessee mined on our property less during the second quarter of 2021 as compared to the prior year quarter in accordance with its mine plan, partially offset by a 32% increase in sales prices as compared to the prior year quarter.
Other Revenues
Other revenues decreased $5.5 million primarily due to decreased production lease minimum revenues as a result of the contract modifications with Foresight beginning to be accounted for in the second quarter of 2020 as discussed above.
Soda Ash
Revenues and other income related to our Soda Ash segment increased $5.7 million compared to the prior year quarter primarily as a result of increased in sales volumes as demand for soda ash continued to rebound from its low in 2020 caused by the global COVID-19 pandemic.
Operating Expenses
The following table presents the significant categories of our consolidated operating expenses:
For the Three Months Ended June 30,Increase
(Decrease)
Percentage
Change
(In thousands)20212020
Operating expenses
Operating and maintenance expenses$5,170 $8,217 $(3,047)(37)%
Depreciation, depletion and amortization4,871 2,062 2,809 136 %
General and administrative expenses3,388 3,621 (233)(6)%
Asset impairments16 132,283 (132,267)(100)%
Total operating expenses$13,445 $146,183 $(132,738)(91)%
Total operating expenses decreased $132.7 million primarily due to a $132.3 million decrease in asset impairments. Asset impairments in the three months ended June 30, 2020 were due to weakened coal markets that resulted in termination of certain coal leases, changes to lessee mine plans resulting in permanent moves off certain of our coal properties and decreased oil and gas drilling activity which negatively impacted the outlook for NRP's frac sand properties. The $3.0 million decrease in operating and maintenance expenses was primarily due to a decrease in bad debt expense. These decreases were partially offset by a $2.8 million increase in depreciation, depletion and amortization expense as a result of increased production at certain Illinois Basin coal properties.
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Adjusted EBITDA (Non-GAAP Financial Measure)
The following table reconciles net income (loss) (the most comparable GAAP financial measure) to Adjusted EBITDA by business segment:
Operating Segments
For the Three Months Ended (In thousands)Coal Royalty and OtherSoda AshCorporate and FinancingTotal
June 30, 2021
Net income (loss)$25,886 $2,566 $(13,070)$15,382 
Less: equity earnings from unconsolidated investment— (2,601)— (2,601)
Add: interest expense, net— 9,682 9,683 
Add: depreciation, depletion and amortization4,871 — — 4,871 
Add: asset impairments16 — — 16 
Adjusted EBITDA$30,774 $(35)$(3,388)$27,351 
June 30, 2020
Net loss$(108,479)$(3,087)$(13,935)$(125,501)
Less: equity earnings from unconsolidated investment— 3,058 — 3,058 
Add: total distributions from unconsolidated investment— 7,105 — 7,105 
Add: interest expense, net15 — 10,314 10,329 
Add: depreciation, depletion and amortization2,062 — — 2,062 
Add: asset impairments132,283 — — 132,283 
Adjusted EBITDA$25,881 $7,076 $(3,621)$29,336 

Adjusted EBITDA decreased $2.0 million primarily due to $7.1 million of lower cash distributions received from Ciner Wyoming in the in second quarter of 2021 as compared to the second quarter of 2020, partially offset by a $4.9 million increase in Adjusted EBITDA within our Coal Royalty and Other segment as a result of lower operating and maintenance expenses and higher revenues and other income, both discussed above.
Distributable Cash Flow ("DCF") and Free Cash Flow ("FCF") (Non-GAAP Financial Measures)
The following table presents the three major categories of the statement of cash flows by business segment:
Operating Segments
For the Three Months Ended (In thousands)Coal Royalty and OtherSoda AshCorporate and FinancingTotal
June 30, 2021
Cash flow provided by (used in) continuing operations
Operating activities$32,028 $(35)$(18,609)$13,384 
Investing activities657 — — 657 
Financing activities(1,000)— (11,900)(12,900)
June 30, 2020
Cash flow provided by (used in) continuing operations
Operating activities$31,953 $7,077 $(19,095)$19,935 
Investing activities365 — — 365 
Financing activities— — (9,978)(9,978)
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The following table reconciles net cash provided by (used in) operating activities of continuing operations (the most comparable GAAP financial measure) by business segment to DCF and FCF:
Operating Segments
For the Three Months Ended (In thousands)Coal Royalty and OtherSoda AshCorporate and FinancingTotal
June 30, 2021
Net cash provided by (used in) operating activities of continuing operations$32,028 $(35)$(18,609)$13,384 
Add: proceeds from asset sales and disposals116 — — 116 
Add: return of long-term contract receivable 541 — — 541 
Distributable cash flow$32,685 $(35)$(18,609)$14,041 
Less: proceeds from asset sales and disposals(116)— — (116)
Less: acquisition costs (1,000)— — (1,000)
Free cash flow$31,569 $(35)$(18,609)$12,925 
June 30, 2020
Net cash provided by (used in) operating activities of continuing operations$31,953 $7,077 $(19,095)$19,935 
Add: proceeds from asset sales and disposals507 — — 507 
Add: return of long-term contract receivable 858 — — 858 
Distributable cash flow$33,318 $7,077 $(19,095)$21,300 
Less: proceeds from asset sales and disposals(507)— — (507)
Less: acquisition costs(1,000)— — (1,000)
Free cash flow$31,811 $7,077 $(19,095)$19,793 

DCF and FCF decreased $7.3 million and $6.9 million, respectively, primarily due to the following:
Coal Royalty and Other Segment
DCF and FCF were relatively flat in the second quarter of 2021 as compared to the prior year period as increased coal royalty cash flow due to stronger coal demand in the second quarter of 2021 was offset by $5 million of increased cash flow in the second quarter of 2020 related to the emergence of a lessee from bankruptcy.
Soda Ash Segment
DCF and FCF decreased $7.1 million primarily as a result of cash distributions received from Ciner Wyoming in the second quarter of 2020. As previously mentioned, Ciner Wyoming suspended its regular quarterly distributions in the third quarter of 2020.

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Results of Operations
First Six Months of 2021 and 2020 Compared
Revenues and Other Income
The following table includes our revenues and other income by operating segment:
For the Six Months Ended June 30,IncreasePercentage
Change
Operating Segment (In thousands)20212020
Coal Royalty and Other$71,087 $68,011 $3,076 %
Soda Ash 4,574 3,214 1,360 42 %
Total$75,661 $71,225 $4,436 %

The changes in revenues and other income is discussed for each of the operating segments below:
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Coal Royalty and Other
The following table presents coal sales volumes, coal royalty revenue per ton and coal royalty revenues by major coal producing region, the significant categories of other revenues and other income:
 For the Six Months Ended June 30,Increase
(Decrease)
Percentage
Change
(In thousands, except per ton data)20212020
Coal sales volumes (tons)
Appalachia
Northern525 414 111 27 %
Central5,625 5,396 229 %
Southern416 648 (232)(36)%
Total Appalachia6,566 6,458 108 %
Illinois Basin5,298 1,083 4,215 389 %
Northern Powder River Basin1,244 867 377 43 %
Total coal sales volumes13,108 8,408 4,700 56 %
Coal royalty revenue per ton
Appalachia
Northern$4.27 $2.01 $2.26 112 %
Central4.44 4.47 (0.03)(1)%
Southern7.06 4.68 2.38 51 %
Illinois Basin2.04 3.08 (1.04)(34)%
Northern Powder River Basin3.49 3.75 (0.26)(7)%
Combined average coal royalty revenue per ton3.45 4.11 (0.66)(16)%
Coal royalty revenues
Appalachia
Northern$2,241 $831 $1,410 170 %
Central24,951 24,124 827 %
Southern2,938 3,034 (96)(3)%
Total Appalachia30,130 27,989 2,141 %
Illinois Basin10,783 3,336 7,447 223 %
Northern Powder River Basin4,341 3,248 1,093 34 %
Unadjusted coal royalty revenues45,254 34,573 10,681 31 %
Coal royalty adjustment for minimum leases(11,591)(4,624)(6,967)(151)%
Total coal royalty revenues$33,663 $29,949 $3,714 12 %
Other revenues
Production lease minimum revenues$7,006 $9,287 $(2,281)(25)%
Minimum lease straight-line revenues10,965 8,796 2,169 25 %
Property tax revenues3,056 2,360 696 29 %
Wheelage revenues 3,625 3,788 (163)(4)%
Coal overriding royalty revenues 2,835 2,005 830 41 %
Lease amendment revenues1,640 1,733 (93)(5)%
Aggregates royalty revenues910 847 63 %
Oil and gas royalty revenues2,266 3,845 (1,579)(41)%
Other revenues572 489 83 17 %
Total other revenues$32,875 $33,150 $(275)(1)%
Coal royalty and other $66,538 $63,099 $3,439 %
Transportation and processing services revenues 4,374 4,447 (73)(2)%
Gain on asset sales and disposals175 465 (290)(62)%
Total Coal Royalty and Other segment revenues and other income$71,087 $68,011 $3,076 %
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Coal Royalty Revenues
Approximately 60% of coal royalty revenues and approximately 45% of coal royalty sales volumes were derived from metallurgical coal during the six months ended June 30, 2021. Total coal royalty revenues increased $3.7 million during the six months ended June 30, 2021 as compared to the prior year period primarily as a result of increased demand for both metallurgical and thermal coals from their lows in 2020 caused by the global COVID-19 pandemic. The discussion by region is as follows:
Appalachia: Coal royalty revenues increased $2.1 million primarily due to a 2% increase in sales volumes in addition to higher sales prices as compared to the prior year.
Illinois Basin: Coal royalty revenues increased $7.4 million primarily due to a 389% increase in sales volumes, partially offset by a 34% decrease in sales prices as compared to the prior year period. As previously mentioned, we entered into lease amendments with Foresight pursuant to which Foresight agreed to pay us fixed cash payments to satisfy all obligations arising out of the existing various coal mining leases and transportation infrastructure fee agreements between the us and Foresight for calendar years 2020 and 2021 and as a result actual revenues from Foresight were flat period-over-period.
Northern Powder River Basin: Coal royalty revenues increased $1.1 million primarily due to a 43% increase in sales volumes related to our lessee mining on our property in accordance with its mine plan in 2021, partially offset by a 7% decrease in sales prices as compared to the prior year.
Soda Ash

Revenues and other income related to our Soda Ash segment increased $1.4 million compared to the prior year primarily as a result of increased in sales volumes as demand for soda ash continued to rebound from its low in 2020 caused by the global COVID-19 pandemic.

Operating Expenses
The following table presents the significant categories of our consolidated operating expenses:
For the Six Months Ended June 30,Increase (Decrease)Percentage
Change
(In thousands)20212020
Operating expenses
Operating and maintenance expenses$10,722 $13,419 $(2,697)(20)%
Depreciation, depletion and amortization9,963 4,074 5,889 145 %
General and administrative expenses7,498 7,534 (36)— %
Asset impairments4,059 132,283 (128,224)(97)%
Total operating expenses$32,242 $157,310 $(125,068)(80)%

Total operating expenses decreased $125.1 million primarily due to a $128.2 million decrease in asset impairments. Asset impairments in the first six months of 2021 primarily related to a lease termination while asset impairments in the first six months of 2020 were due to weakened coal markets that resulted in termination of certain coal leases, changes to lessee mine plans resulting in permanent moves off certain of our coal properties and decreased oil and gas drilling activity which negatively impacted the outlook for NRP's frac sand properties. The $2.7 million decrease in operating and maintenance expenses was primarily due to a decrease in bad debt expense. These decreases were partially offset by a $5.9 million increase in depreciation, depletion and amortization expense primarily as a result of increased production at certain Illinois Basin coal properties.

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Adjusted EBITDA (Non-GAAP Financial Measure)
The following table reconciles net income (loss) (the most comparable GAAP financial measure) to Adjusted EBITDA by business segment:
Operating Segments
For the Six Months Ended (In thousands)Coal Royalty and OtherSoda AshCorporate and FinancingTotal
June 30, 2021
Net income (loss)$46,374 $4,519 $(27,130)$23,763 
Less: equity earnings from unconsolidated investment— (4,574)— (4,574)
Add: total distributions from unconsolidated investment— 3,920 — 3,920 
Add: interest expense, net24 — 19,632 19,656 
Add: depreciation, depletion and amortization9,963 — — 9,963 
Add: asset impairments4,059 — — 4,059 
Adjusted EBITDA$60,420 $3,865 $(7,498)$56,787 
June 30, 2020
Net income (loss)$(81,735)$3,169 $(28,156)$(106,722)
Less: equity earnings from unconsolidated investment— (3,214)— (3,214)
Add: total distributions from unconsolidated investment— 14,210 — 14,210 
Add: interest expense, net15 — 20,622 20,637 
Add: depreciation, depletion and amortization4,074 — — 4,074 
Add: asset impairments132,283 — — 132,283 
Adjusted EBITDA$54,637 $14,165 $(7,534)$61,268 

Adjusted EBITDA decreased $4.5 million primarily due to $10.3 million of lower cash distributions received from Ciner Wyoming in the first six months of 2021 as compared to the prior year, partially offset by a $5.8 million increase in Adjusted EBITDA within our Coal Royalty and Other segment as a result of lower operating and maintenance expenses and higher revenues and other income, both discussed above.
Distributable Cash Flow ("DCF") and Free Cash Flow ("FCF") (Non-GAAP Financial Measures)
The following table presents the three major categories of the statement of cash flows by business segment:
Operating Segments
For the Six Months Ended (In thousands)Coal Royalty and OtherSoda AshCorporate and FinancingTotal
June 30, 2021
Cash flow provided by (used in) continuing operations
Operating activities$57,990 $3,853 $(25,259)$36,584 
Investing activities1,257 — — 1,257 
Financing activities(1,132)— (38,591)(39,723)
June 30, 2020
Cash flow provided by (used in) continuing operations
Operating activities$62,509 $14,166 $(26,585)$50,090 
Investing activities637 — — 637 
Financing activities— — (38,164)(38,164)
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The following table reconciles net cash provided by (used in) operating activities of continuing operations (the most comparable GAAP financial measure) by business segment to DCF and FCF:
Operating Segments
For the Six Months Ended (In thousands)Coal Royalty and OtherSoda AshCorporate and FinancingTotal
June 30, 2021
Net cash provided by (used in) operating activities of continuing operations$57,990 $3,853 $(25,259)$36,584 
Add: proceeds from asset sales and disposals175 — — 175 
Add: return of long-term contract receivable1,082 — — 1,082 
Distributable cash flow$59,247 $3,853 $(25,259)$37,841 
Less: proceeds from asset sales and disposals (175)— — (175)
Less: acquisition costs(1,000)— — (1,000)
Free cash flow$58,072 $3,853 $(25,259)$36,666 
June 30, 2020
Net cash provided by (used in) operating activities of continuing operations$62,509 $14,166 $(26,585)$50,090 
Add: proceeds from asset sales and disposals507 — — 507 
Add: proceeds from sale of discontinued operations— — — (66)
Add: return of long-term contract receivable 1,130 — — 1,130 
Distributable cash flow$64,146 $14,166 $(26,585)$51,661 
Less: proceeds from asset sales and disposals(507)— — (507)
Less: proceeds from sale of discontinued operations— — — 66 
Less: acquisition costs(1,000)— — (1,000)
Free cash flow$62,639 $14,166 $(26,585)$50,220 

DCF and FCF decreased $13.8 million and $13.6 million, respectively, primarily due to the following:
Coal Royalty and Other Segment
DCF and FCF decreased $4.9 million and $4.6 million, respectively, primarily as a result of $5.7 million of lease amendment fee payments received in 2020. This decrease was partially offset by increased cash flow in 2021 primarily as a result of the rebounding of coal demand from its low in 2020 caused by the global COVID-19 pandemic.
Soda Ash Segment
DCF and FCF decreased $10.3 million as a result of lower cash distributions received from Ciner Wyoming in the first six months of 2021 as compared to the prior year. As previously mentioned, although Ciner Wyoming made a special distribution to its members in the first quarter of 2021, Ciner Wyoming suspended its regular quarterly distributions in the third quarter of 2020.
Liquidity and Capital Resources
Current Liquidity
As of June 30, 2021, we had total liquidity of $197.9 million, consisting of $97.9 million of cash and cash equivalents and $100.0 million of borrowing capacity under our Opco Credit Facility. We have significant debt service obligations, including approximately $20 million of principal repayments on Opco’s senior notes throughout the remainder of 2021. We believe our liquidity position provides us with the flexibility to continue paying down debt and manage our business through the current market environment.

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Cash Flows
Cash flows provided by operating activities decreased $15.2 million, from $51.8 million in the six months ended June 30, 2020 to $36.6 million in the six months ended June 30, 2021, primarily related to $10.3 million of lower cash distributions received from Ciner Wyoming in the first six months of 2021 as compared to the prior year quarter and lower operating cash flow within our Coal Royalty and Other segment primarily as a result of $5.7 million of lease amendment fee payments received in 2020. These decreases were partially offset by increased cash flow in 2021 primarily as a result of the rebounding of coal demand from its low in 2020 caused by the global COVID-19 pandemic and $1.3 million of lower cash paid for interest as our debt balance continues to decline.
Capital Resources and Obligations
Debt, Net
We had the following debt outstanding as of June 30, 2021 and December 31, 2020:
June 30,December 31,
(In thousands)20212020
Current portion of long-term debt, net$39,060 $39,055 
Long-term debt, net414,099 432,444 
Total debt, net$453,159 $471,499 
We have been and continue to be in compliance with the terms of the financial covenants contained in our debt agreements. For additional information regarding our debt and the agreements governing our debt, including the covenants contained therein, see Note 8. Debt, Net to the Consolidated Financial Statements included elsewhere in this Quarterly Report on Form 10-Q.

Off-Balance Sheet Transactions
We do not have any off-balance sheet arrangements with unconsolidated entities or related parties and accordingly, there are no off-balance sheet risks to our liquidity and capital resources from unconsolidated entities.

Related Party Transactions
The information required set forth under Note 10. Related Party Transactions to the Consolidated Financial Statements is incorporated herein by reference.

Summary of Critical Accounting Estimates
The preparation of Consolidated Financial Statements in conformity with generally accepted accounting principles in the United States of America requires management to make certain estimates and assumptions that affect the amounts reported in the Consolidated Financial Statements and the accompanying notes. There have been no significant changes to our critical accounting estimates from those disclosed in our Annual Report on Form 10-K for the year ended December 31, 2020.
Recent Accounting Standards
The information set forth under Note 1. Basis of Presentation to the Consolidated Financial Statements is incorporated herein by reference.


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ITEM 3. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK
As a smaller reporting company, we are not required to include this disclosure in our Form 10-Q for the quarterly period ended June 30, 2021.

ITEM 4. CONTROLS AND PROCEDURES
Evaluation of Disclosure Controls and Procedures
NRP carried out an evaluation of the effectiveness of the design and operation of its disclosure controls and procedures (as defined in Rules 13a-15(e) and 15d-15(e) of the Securities Exchange Act of 1934, as amended (the “Exchange Act”)) as of the end of the period covered by this report. This evaluation was performed under the supervision and with the participation of NRP management, including the Chief Executive Officer and Chief Financial Officer of the general partner of the general partner of NRP. Based upon that evaluation, the Chief Executive Officer and Chief Financial Officer concluded that these disclosure controls and procedures are effective in providing reasonable assurance that (a) the information required to be disclosed by us in the reports that we file or submit under the Exchange Act is recorded, processed, summarized and reported within the time periods specified in the Securities and Exchange Commission’s rules and forms, and (b) such information is accumulated and communicated to our management, including our CEO and CFO, as appropriate to allow timely decisions regarding required disclosure.
Changes in the Partnership’s Internal Control Over Financial Reporting
There were no material changes in the Partnership’s internal control over financial reporting during the first six months of 2021 that materially affected, or were reasonably likely to materially affect, the Partnership’s internal control over financial reporting.


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PART II
ITEM 1. LEGAL PROCEEDINGS
From time to time, we are involved in various legal proceedings arising in the ordinary course of business. While the ultimate results of these proceedings cannot be predicted with certainty, we believe these ordinary course matters will not have a material effect on our financial position, liquidity or operations.
ITEM 1A. RISK FACTORS
During the period covered by this report, there were no material changes from the risk factors previously disclosed in Natural Resource Partners L.P.’s Annual Report on Form 10-K for the year ended December 31, 2020.
ITEM 2. UNREGISTERED SALES OF EQUITY SECURITIES AND USE OF PROCEEDS
None.

ITEM 3. DEFAULTS UPON SENIOR SECURITIES
None. 

ITEM 4. MINE SAFETY DISCLOSURES
None.

ITEM 5. OTHER INFORMATION
None.
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ITEM 6. EXHIBITS
Exhibit
Number
 Description
Fifth Amended and Restated Agreement of Limited Partnership of Natural Resource Partners L.P., dated as of March 2, 2017 (incorporated by reference to Exhibit 3.1 to Current Report on Form 8-K filed on March 6, 2017).
 Fifth Amended and Restated Agreement of Limited Partnership of NRP (GP) LP, dated as of December 16, 2011 (incorporated by reference to Exhibit 3.1 to Current Report on Form 8-K filed on December 16, 2011).
 Fifth Amended and Restated Limited Liability Company Agreement of GP Natural Resource Partners LLC, dated as of October 31, 2013 (incorporated by reference to Exhibit 3.1 to Current Report on Form 8-K filed on October 31, 2013).
 Certificate of Limited Partnership of Natural Resource Partners L.P. (incorporated by reference to Exhibit 3.1 to the Registration Statement on Form S-1 filed April 19, 2002, File No. 333-86582).
Certification of Chief Executive Officer pursuant to Section 302 of Sarbanes-Oxley.
Certification of Chief Financial Officer pursuant to Section 302 of Sarbanes-Oxley.
Certification of Chief Executive Officer pursuant to 18 U.S.C. § 1350.
Certification of Chief Financial Officer pursuant to 18 U.S.C. § 1350.
101.INS*Inline XBRL Instance Document
101.SCH*Inline XBRL Taxonomy Extension Schema Document
101.CAL*Inline XBRL Taxonomy Extension Calculation Linkbase Document
101.DEF*Inline XBRL Taxonomy Extension Definition Linkbase Document
101.LAB*Inline XBRL Taxonomy Extension Labels Linkbase Document
101.PRE*Inline XBRL Taxonomy Extension Presentation Linkbase Document
104*Cover Page Interactive Data File (formatted as inline XBRL with applicable taxonomy extension information contained in Exhibits 101)
*Filed herewith
**Furnished herewith



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SIGNATURES
Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned and thereunto duly authorized.
NATURAL RESOURCE PARTNERS L.P.
By:NRP (GP) LP, its general partner
By:GP NATURAL RESOURCE
PARTNERS LLC, its general partner
By: /s/     CORBIN J. ROBERTSON, JR.
 Corbin J. Robertson, Jr.
 Chairman of the Board and
 Chief Executive Officer
 (Principal Executive Officer)
By: /s/     CHRISTOPHER J. ZOLAS
 Christopher J. Zolas
 Chief Financial Officer and Treasurer
(Principal Financial and Accounting Officer)


37

Dates Referenced Herein   and   Documents Incorporated by Reference

This ‘10-Q’ Filing    Date    Other Filings
6/30/25
10/30/22
10/30/21
Filed on:8/6/218-K
For Period end:6/30/21
3/31/2110-Q
3/15/2110-K,  8-K
1/1/21
12/31/2010-K
6/30/2010-Q,  8-K
4/1/20
3/31/2010-Q
1/1/20
12/31/1910-K
4/29/198-K
3/6/1710-K,  3,  8-K
3/2/173,  8-K
10/31/133,  4,  8-K
12/16/118-K
4/19/02S-1
 List all Filings 


4 Previous Filings that this Filing References

  As Of               Filer                 Filing    For·On·As Docs:Size             Issuer                      Filing Agent

 3/06/17  Natural Resource Partners LP      8-K:1,2,3,5 3/02/17   11:8.7M
10/31/13  Natural Resource Partners LP      8-K:5,9    10/31/13    2:236K                                   Donnelley … Solutions/FA
12/16/11  Natural Resource Partners LP      8-K:5,9    12/16/11    2:262K                                   Donnelley … Solutions/FA
 4/19/02  Natural Resource Partners LP      S-1                   12:1.1M                                   RR Donnelley
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