| SIC Code | Business or Product | Registrants |
|---|
|  | | |
| 2892 | Nitrosugars (explosives) | * |
| 2813 | Nitrous oxide | * |
| 3321 | Nodular iron castings | * |
| 2299 | Noils, wool and mohair | * |
| 3842 | Noise protectors, personal | 187 |
| 3297 | Nonclay refractories | * |
| 6091 | Nondeposit trust companies | * |
| 3313 | Nonferrous additive alloys, high percentage: except copper | * |
| 3463 | Nonferrous forgings, not made in hot-rolling mills | * |
| 3369 | Nonferrous metal foundries, except aluminum, copper, and die-castings | * |
| 3369 | Nonferrous metal machinery castings: except aluminum, copper, and die-castings | * |
| 3341 | Nonferrous metal smelting and refining, secondary | 11 |
| 5051 | Nonferrous metal, except precious: e.g., sheets, bars, rods – wholesale | 35 |
| 5093 | Nonferrous metals scrap – wholesale | * |
| 3339 | Nonferrous refining, primary: except copper and aluminum | * |
| 3356 | Nonferrous rolling, drawing, and extruding: except copper and aluminum | * |
| 3339 | Nonferrous smelting, primary: except copper and aluminum | * |
| 5052 | Nonmetallic minerals and concentrates, crude: except petroleum – wholesale | * |
| 7812 | Nontheatrical motion picture production | 310 |
| 2099 | Noodles, fried (e.g., Chinese) | * |
________
* There are SEC Registrants, but only at the 2- or 3-digit SIC Code levels. |
