| SSSidney Sugar Facility | Sidney | MT | Food Manufacturing311311 | — | ◐ LIKELY ACTIVE |
| SPSmc Precious Metals Smelter & Base Metal Refy | Columbus | MT | Primary Metal Manufacturing331410 | — | ◐ LIKELY ACTIVE |
| SUSolvay USA Inc.-silver Bow Plant | Silver Bow | MT | Chemical Manufacturing325180 | — | ◐ LIKELY ACTIVE |
| SMStillwater Mining CO Smelter | Columbus | MT | Primary Metal Manufacturing331410 | — | ◐ LIKELY ACTIVE |
| TRTransco Railway Products | Miles City | MT | Transportation Equipment Manufacturing336510 | — | ◐ LIKELY ACTIVE |
| WMWestern Montana Orthotics & Prosthetics, P.c | Missoula | MT | Miscellaneous Manufacturing339113 | 1-19 | ◐ LIKELY ACTIVE |
| AAA and S Industries | Poplar | MT | Fabricated Metal Product Manufacturing332322 | — | ◇ UNVERIFIED |
| AIAdf Industrial Coatings | Great Falls | MT | Fabricated Metal Product Manufacturing332312 | — | ◇ UNVERIFIED |
| ALAdvanced Litho Printing, LLC | Great Falls | MT | Printing and Related Support Activities323111 | — | ◇ UNVERIFIED |
| ALAlliance Liquid Feeds - Billings Mt #51 | Billings | MT | Food Manufacturing311119 | — | ◇ UNVERIFIED |
| AIAllison Industries INC | Great Falls | MT | Fabricated Metal Product Manufacturing332813 | — | ◇ UNVERIFIED |
| AMApplied Materials | Kalispell | MT | Machinery Manufacturing333242 | — | ◇ UNVERIFIED |
| AMApplied Materials, Ppc Business Unit | Kalispell | MT | Machinery Manufacturing333242 | — | ◇ UNVERIFIED |
| AAArlins Aircraft Service INC | Belgrade | MT | Transportation Equipment Manufacturing336412 | — | ◇ UNVERIFIED |
| APArmor Powder Coating | Missoula | MT | Fabricated Metal Product Manufacturing332812 | — | ◇ UNVERIFIED |
| AAsarco | Helena | MT | Primary Metal Manufacturing331410 | — | ◇ UNVERIFIED |
| BLBay LTD | Billings | MT | Fabricated Metal Product Manufacturing332313 | — | ◇ UNVERIFIED |
| BIBest in Bronze INC | Kalispell | MT | Primary Metal Manufacturing331525 | — | ◇ UNVERIFIED |
| BSBig Sky Racks INC | Bozeman | MT | Fabricated Metal Product Manufacturing332994 | — | ◇ UNVERIFIED |
| CPCentral Post and Treating CO Facility | Lewistown | MT | Wood Product Manufacturing321114 | — | ◇ UNVERIFIED |
| CIChovanak INC | Helena | MT | Primary Metal Manufacturing331492 | — | ◇ UNVERIFIED |
| CBChs Big Sky | Denton | MT | Chemical Manufacturing325314 | — | ◇ UNVERIFIED |
| CBChs Big Sky- Kershaw | Fort Benton | MT | Chemical Manufacturing325314 | — | ◇ UNVERIFIED |
| CMChs Mountain West Co-op - Kalispell | Kalispell | MT | Chemical Manufacturing325314 | — | ◇ UNVERIFIED |
| CTClassone Technology | Kalispell | MT | Machinery Manufacturing333242 | — | ◇ UNVERIFIED |
| CICoatings INC Riverside | Billings | MT | Fabricated Metal Product Manufacturing332812 | — | ◇ UNVERIFIED |
| CFColumbia Falls Aluminum | Columbia Falls | MT | Primary Metal Manufacturing331312 | — | ◇ UNVERIFIED |
| CFColumbia Falls Aluminum Company Building 1 | Columbia Falls | MT | Primary Metal Manufacturing331313 | — | ◇ UNVERIFIED |
| CPColumbia Paint & Coatings CO | Helena | MT | Chemical Manufacturing325510 | — | ◇ UNVERIFIED |
| CMCompatible Manufacturing INC | Marion | MT | Fabricated Metal Product Manufacturing332710 | — | ◇ UNVERIFIED |
| EPEureka Pellet Mills | Eureka | MT | Wood Product Manufacturing321999 | — | ◇ UNVERIFIED |
| FSFiberglass Structures | Laurel | MT | Plastics and Rubber Products Manufacturing326199 | — | ◇ UNVERIFIED |
| FLFinishing Lab, LLC | Bozeman | MT | Fabricated Metal Product Manufacturing332813 | — | ◇ UNVERIFIED |
| FCForterra Concrete Products - Helena | Helena | MT | Nonmetallic Mineral Product Manufacturing327332 | — | ◇ UNVERIFIED |
| GLGlassco Lumber | Stanford | MT | Wood Product Manufacturing321114 | — | ◇ UNVERIFIED |
| HSHelena Sand & Gravel Dba Montana Materials & Const | Anaconda | MT | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| JKJ K Fabrication & Supply LLC | Butte | MT | Fabricated Metal Product Manufacturing332312 | — | ◇ UNVERIFIED |
| KRKnoll's Ready Mix | Glendive | MT | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| LPLewistown Propane & Fertilizer Co-denton Plant | Denton | MT | Chemical Manufacturing325314 | — | ◇ UNVERIFIED |
| LLL&m Lockers | Belt | MT | Food Manufacturing311611 | — | ◇ UNVERIFIED |
 Louisiana-pacific - Belgrade | Belgrade | MT | Wood Product Manufacturing321912 | — | ◇ UNVERIFIED |
| MRM2green Redevelopment | Missoula | MT | Paper Manufacturing322130 | — | ◇ UNVERIFIED |
| MNMalteurop North American, INC | Great Falls | MT | Food Manufacturing311213 | — | ◇ UNVERIFIED |
| MAMontana Advanced Biofuels LLC | Great Falls | MT | Chemical Manufacturing325193 | — | ◇ UNVERIFIED |
| MPMontana Pole and Treating | Butte | MT | Wood Product Manufacturing321113 | — | ◇ UNVERIFIED |
| MWMountain West LLC | Superior | MT | Wood Product Manufacturing321999 | — | ◇ UNVERIFIED |
| NPNorthern Plastics INC | Kalispell | MT | Plastics and Rubber Products Manufacturing326199 | — | ◇ UNVERIFIED |
| NANorthwest Art Casting INC | Bozeman | MT | Primary Metal Manufacturing331525 | — | ◇ UNVERIFIED |
| NINupac, INC - a Division of Helena Sand & Gravel | Kalispell | MT | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| OHOwens & Hurst Lumber CO | Eureka | MT | Wood Product Manufacturing321113 | — | ◇ UNVERIFIED |
