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

10/05/16  SEC                               UPLOAD¶    11/04/16    1:166K Continental Cement Co, L.L.C.
                                                                          Con-Agg of MO, L.L.C.
                                                                          N.R. Hamm Quarry, LLC
                                                                          Bourbon Limestone Co
                                                                          Industrial Asphalt, LLC
                                                                          Alleyton Resource Company, LLC
                                                                          American Materials Company, LLC
                                                                          Summit Materials Finance Corp.
                                                                          SCS Materials, LLC
                                                                          Troy Vines, Inc
                                                                          Buckhorn Materials, LLC
                                                                          Green America Recycling, LLC
                                                                          Boxley Materials Co
                                                                          Kilgore Companies, LLC
                                                                          Austin Materials, LLC
                                                                          RK Hall, LLC
                                                                          B&B Resources, Inc.
                                                                          Summit Materials International, LLC
                                                                          Kilgore Partners, L.P.
                                                                          Penny’s Concrete & Ready Mix, L.L.C.
                                                                          Summit Materials, LLC
                                                                          N.R. Hamm Contractor, LLC
                                                                          H.C. Rustin Corp
                                                                          Elam Construction, Inc.
                                                                          Summit Materials Holdings II, LLC
                                                                          Alleyton Services Company, LLC
                                                                          R.D. Johnson Excavating Company, LLC
                                                                          Summit Materials Corporations I, Inc.
                                                                          Sierra Ready Mix Ltd Liability Co
                                                                          Hamm, Inc.
                                                                          Colorado County Sand & Gravel Co., L.L.C.
                                                                          Hinkle Contracting Company, LLC
                                                                          LeGrand Johnson Construction Co.
                                                                          Pelican Asphalt Co LLC
                                                                          Concrete Supply of Topeka, Inc.
                                                                          Cornejo & Sons, L.L.C.
                                                                          Lewis & Lewis, Inc.