| ACAdvanced Circuits Aurora Plant | Aurora | CO | Computer and Electronic Product Manufacturing334412 | — | ◇ UNVERIFIED |
| ASAfco Steel | Greeley | CO | Fabricated Metal Product Manufacturing332312 | — | ◇ UNVERIFIED |
| AIAggregate Industries - Castle Rock Plant | Castle Rock | CO | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| AIAggregate Industries Wcr INC Drake Ready Mix Plant | Fort Collins | CO | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| AEArcosa Esc Boulder | Boulder | CO | Nonmetallic Mineral Product Manufacturing327992 | — | ◇ UNVERIFIED |
| BBBest Block - South Plant | Pueblo | CO | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| BMBkep Materials - Denver C & K | Commerce City | CO | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| BBBoral Best Block North Plant | Littleton | CO | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| BRBrannan Ready Mix - South Ready Mix | Englewood | CO | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| BSBrannan Sand & Gravel | Commerce City | CO | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| BCBurnco Colorado - Bernhardt Batch Plant | Milliken | CO | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| CECalifornia Expanded Metals CO | Denver | CO | Fabricated Metal Product Manufacturing332114 | — | ◇ UNVERIFIED |
| CMClimax Molybdenum-henderson Mill | Parshall | CO | Primary Metal Manufacturing331410 | — | ◇ UNVERIFIED |
| CSColorado Salt Products | Denver | CO | Chemical Manufacturing325180 | — | ◇ UNVERIFIED |
| DFDairy Farmers of America INC | Fort Morgan | CO | Food Manufacturing311514 | — | ◇ UNVERIFIED |
| DMDenver Metal Finishing | Denver | CO | Fabricated Metal Product Manufacturing332813 | — | ◇ UNVERIFIED |
| DSDieterich Standard INC | Boulder | CO | Computer and Electronic Product Manufacturing334513 | — | ◇ UNVERIFIED |
| EGEagle Gypsum Mine | Gypsum | CO | Nonmetallic Mineral Product Manufacturing327420 | — | ◇ UNVERIFIED |
| FLFrito Lay INC - 11645 E 37th Ave | Denver | CO | Food Manufacturing311919 | — | ◇ UNVERIFIED |
| HIHauser INC | Frederick, 0.5 Mi N of | CO | Food Manufacturing311930 | — | ◇ UNVERIFIED |
| HWHolcim Wcr - Cs-north | Colorado Springs | CO | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| HIHolcim-wcr INC - Bannock | Denver | CO | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| HIHolcim-wcr INC - Broomfield Plant | Broomfield | CO | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| HIHolcim-wcr INC - Commerce City Readymix | Commerce City | CO | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| HIHolcim-wcr INC - Sand Cree | Aurora | CO | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| KCKbp Coil Coaters INC - 3600 E 44th Ave | Denver | CO | Fabricated Metal Product Manufacturing332812 | — | ◇ UNVERIFIED |
| KEKmg Electronic Chemicals,inc. | Pueblo | CO | Chemical Manufacturing325180 | — | ◇ UNVERIFIED |
| LOLand O'lakes Purina Feed LLC Denver | Henderson | CO | Food Manufacturing311119 | — | ◇ UNVERIFIED |
 Lexmark International INC | Longmont | CO | Chemical Manufacturing325992 | — | ◇ UNVERIFIED |
| LILoveland Industries | Greeley | CO | Chemical Manufacturing325320 | — | ◇ UNVERIFIED |
| MMMartin Marietta - 2401 Picadilly Rd | Aurora | CO | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| MMMartin Marietta Chambers Ready Mix | Aurora | CO | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| MTMatheson Trigas - Longmont Branch | Longmont | CO | Chemical Manufacturing325120 | — | ◇ UNVERIFIED |
| MCMetal Castings of Colorado INC. | Loveland | CO | Primary Metal Manufacturing331522 | — | ◇ UNVERIFIED |
| NGN.a. Galvanizing CO - 4400 E 61st Ave | Commerce City | CO | Fabricated Metal Product Manufacturing332812 | — | ◇ UNVERIFIED |
| PSPeak Silverthorne Batch Plant | Silverthorne | CO | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| RWRanch Way Feed Mills | Fort Collins | CO | Food Manufacturing311119 | — | ◇ UNVERIFIED |
| RMRocky Mountain Materials and Asphalt INC | Colorado Springs | CO | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| RMRocky Mountain Metal Container | Golden | CO | Fabricated Metal Product Manufacturing332431 | — | ◇ UNVERIFIED |
| SISashco INC | Brighton | CO | Chemical Manufacturing325510 | — | ◇ UNVERIFIED |
| SDSinton Dairy Foods Comp LLC | Colorado Springs | CO | Food Manufacturing311511 | — | ◇ UNVERIFIED |
| SFSouthern Foods Group LLC D/b/a Meadow Gold Dairies | Englewood | CO | Food Manufacturing311511 | — | ◇ UNVERIFIED |
 Spg International LLC Br #x032 Universal Brand | Aurora | CO | Fabricated Metal Product Manufacturing332322 | — | ◇ UNVERIFIED |
| SPStar Precision | Longmont | CO | Fabricated Metal Product Manufacturing332322 | — | ◇ UNVERIFIED |
| TBTerumo Bct | Denver | CO | Miscellaneous Manufacturing339112 | — | ◇ UNVERIFIED |
| UFU F P Western Division INC | Windsor | CO | Wood Product Manufacturing321114 | — | ◇ UNVERIFIED |
 Unicircuit, INC - 8192 Southpark Lane | Littleton | CO | Computer and Electronic Product Manufacturing334412 | — | ◇ UNVERIFIED |
| UDUS Department of the Treasury US Mint Denver | Denver | CO | Fabricated Metal Product Manufacturing332119 | — | ◇ UNVERIFIED |
| VBVance Brothers INC | Denver | CO | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| WAWeatherford Als LLC | Colorado Springs | CO | Fabricated Metal Product Manufacturing332813 | — | ◇ UNVERIFIED |
