| GWGraymont Western Lime Plant | Townsend | MT | Nonmetallic Mineral Product Manufacturing327410 | — | ◇ UNVERIFIED |
| JGJtl Group Belgrade Dba Knife River - Belgrade | Belgrade | MT | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| JSJupiter Sulphur, LLC. - Billings | Billings | MT | Chemical Manufacturing325180 | — | ◇ UNVERIFIED |
| KMKoch Materials CO Billings | Billings | MT | Petroleum and Coal Products Manufacturing324120 | — | ◇ UNVERIFIED |
| RFRoseburg Forest Products | Missoula | MT | Wood Product Manufacturing321219 | — | ◇ UNVERIFIED |
| AMApex Manufacturing Services, LTD | Billings | MT | Fabricated Metal Product Manufacturing332710 | — | ◇ UNVERIFIED |
| SRSpark R&d | Bozeman | MT | Miscellaneous Manufacturing339920 | — | ◇ UNVERIFIED |
| 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 |
| AIAffco INC | Anaconda | MT | Primary Metal Manufacturing331511 | — | ◇ 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 |
| BTBig Timber Meats | Big Timber | MT | Food Manufacturing311611 | — | ◇ UNVERIFIED |
| BTBig Timber Wastewater Treatment Plant | Big Timber | 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 |
| CEConverting Equipment International INC | Columbia Falls | MT | Machinery Manufacturing333517 | — | ◇ UNVERIFIED |
| CCCretex Concrete Products - Montana City | Montana City | MT | Nonmetallic Mineral Product Manufacturing327332 | — | ◇ UNVERIFIED |
| DIDecorative Industrial Plating LLC | Helena | MT | Fabricated Metal Product Manufacturing332812 | — | ◇ UNVERIFIED |
| EAErgon Asphalt & Emulsions, INC. - Butte | Butte | MT | Petroleum and Coal Products Manufacturing324121 | — | ◇ 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 - Billings | Billings | MT | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| FCForterra Concrete Products - Helena | Helena | MT | Nonmetallic Mineral Product Manufacturing327332 | — | ◇ UNVERIFIED |
| GLGlassco Lumber | Stanford | MT | Wood Product Manufacturing321114 | — | ◇ UNVERIFIED |
| HMHarvest Moon Brewing Company | Belt | MT | Beverage and Tobacco Product Manufacturing312120 | — | ◇ UNVERIFIED |
| HSHelena Sand & Gravel Dba Montana Materials & Const | Anaconda | MT | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| IIIronhaus INC | Hamilton | MT | Fabricated Metal Product Manufacturing332813 | — | ◇ UNVERIFIED |
| JKJ K Fabrication & Supply LLC | Butte | MT | Fabricated Metal Product Manufacturing332312 | — | ◇ UNVERIFIED |
| JRJ & R Planing INC | Missoula | MT | Wood Product Manufacturing321113 | — | ◇ UNVERIFIED |
| JGJtl Group Billings (dba - Knife River Billings) | Billings | MT | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
