| NINupac, INC - a Division of Helena Sand & Gravel | Kalispell | MT | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| TSTri State Recycling Services INC | Worden | MT | Petroleum and Coal Products Manufacturing324199 | — | ◇ UNVERIFIED |
| UMUnited Mat'ls Missouri River Gravel Pit | Great Falls | MT | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| B0Blankenship - 093-0012 | Butte | MT | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| C0Century - 021-0002 | Glendive | MT | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| C0Century - 027-0004 | Lewistown | MT | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| CIChs, INC. | Laurel | MT | Petroleum and Coal Products Manufacturing324110 | — | ◇ UNVERIFIED |
| COCity of Wolf Point Asphalt Plant | Wolf Point | MT | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| FLFlynn Lane - 063-0012 | Missoula | MT | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| GEGilman Excavating - 777-2543 | Butte | MT | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| HCHardrives Construction INC | Billings | MT | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| HSHelena Sand & Gravel | Helena | MT | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| JGJtl Group INC - 031-0001 | Bozeman | MT | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| JGJtl Group INC - Target Range | Missoula | MT | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| MMMontana Materials and Construction Black Eagle | Great Falls | MT | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| MAMr Asphalt, INC. | Corvallis | MT | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| NFNwpmg00002 Former Texaco Sunburst Works | Sunburst | MT | Petroleum and Coal Products Manufacturing324110 | — | ◇ UNVERIFIED |
| RCRiverside Contracting - 063-0049 | Seeley Lake | MT | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| SCSchellinger Construction CO. INC. | Seeley Lake | MT | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
 Western Emulsions Plant | Billings | MT | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
