| RORex Oil CO | Golden | CO | Petroleum and Coal Products Manufacturing324110 | — | ◇ UNVERIFIED |
| RPRitchie Paving INC. | Colorado | CO | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| RMRocky Mountain Materials & Asphalt INC | City Name Not Provided | CO | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| SCSchmidt Construction Co.-delta Drive Fac | Colorado Springs | CO | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| SESchrader Environmental Services | Fort Collins | CO | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| SCSiegrist Const | Denver | CO | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| SCSimon Contractors - Rushmore Bc Plant | Statewide | CO | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| SRSmyrna Ready Mix Concrete, LLC - Spec Agg Ready Mix | Golden | CO | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| TITeksonix INC Gary Ref Fruita CO | Fruita | CO | Petroleum and Coal Products Manufacturing324110 | — | ◇ UNVERIFIED |
| TCTerra Const CO | Elizabeth | CO | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| TCTower Const | Unknown | CO | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| TWTriad Western Constructor INC | Cortez | CO | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| VBVance Bros INC | Aurora | CO | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| WCWestern Consolidated Ind | Fort Lupton | CO | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| WMWestern Mobile | Greeley | CO | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| WMWestern Mobile Boulder INC | Boulder | CO | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| WMWestern Mobile INC | Boulder | CO | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| WMWestern Mobile Northern INC | El Paso County | CO | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| WMWestern Mobile Northern Prospect Plt | Fort Collins | CO | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| WPWestern Paving #2 | Westminster | CO | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| WPWestern Paving Const.cn | Golden | CO | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| WTWilliam Thompson | Elbert Cnty | CO | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| YCYuma County Highway Department | Eckley Area | CO | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
