| BLBpi Labs | Evanston | WY | Chemical Manufacturing325620 | — | ◐ LIKELY ACTIVE |
| DNDyno Nobel Inc-cheyenne Plant | Cheyenne | WY | Chemical Manufacturing325120 | — | ◐ LIKELY ACTIVE |
| DFDystar Foam Control | Cheyenne | WY | Food Manufacturing311999 | 1-19 | ◐ LIKELY ACTIVE |
| GRGreen River Sodium Products Plant (church & Dwight Inc) | Sweetwater County | WY | Chemical Manufacturing325180 | — | ◐ LIKELY ACTIVE |
| HGHilight Gas Plant | Gillette | WY | Chemical Manufacturing325120 | — | ◐ LIKELY ACTIVE |
| NCNalco CO - Evansville Plant 108 | Evansville | WY | Chemical Manufacturing325199 | — | ◐ LIKELY ACTIVE |
| NBNelson Brothers Mining Services LLC | Gillette | WY | Chemical Manufacturing325920 | — | ◐ LIKELY ACTIVE |
Elixian Essence LLC | Lander | WY | Chemical Manufacturing325620 | — | ◐ LIKELY ACTIVE |
| EBElk Basin Gas Plant | Park | WY | Chemical Manufacturing325120 | — | ◐ LIKELY ACTIVE |
Omega Industrial Supply, INC. | Cheyenne | WY | Chemical Manufacturing325612 | — | ◐ LIKELY ACTIVE |
| FGFmc Granger | Granger | WY | Chemical Manufacturing325180 | — | ◐ LIKELY ACTIVE |
| FWFmc Wyoming Corporation - Green River Wyoming Facility | Green River | WY | Chemical Manufacturing325181 | — | ◐ LIKELY ACTIVE |
| ASAurum Standards Group | Laramie | WY | Chemical Manufacturing325998 | — | ◐ LIKELY ACTIVE |
| EPEast Painter Facility | Uinta | WY | Chemical Manufacturing325120 | — | ◐ LIKELY ACTIVE |
| ESEcho Springs Gas Plant | Carbon | WY | Chemical Manufacturing325120 | — | ◐ LIKELY ACTIVE |
| HCHalliburton Casper Field Camp | Evansville | WY | Chemical Manufacturing325998 | — | ◐ LIKELY ACTIVE |
| HCHalliburton Casper Field Camp | Evansville | WY | Chemical Manufacturing325998 | — | ◐ LIKELY ACTIVE |
| OBOregon Basin Gas Plant | Cody | WY | Chemical Manufacturing325120 | — | ◐ LIKELY ACTIVE |
| APABW Plant - Rock Springs | Rock Springs | WY | Chemical Manufacturing325312 | 100-499 | ◐ LIKELY ACTIVE |
| CAChurch and Dwight - Green River Plant | Green River | WY | Chemical Manufacturing325180 | 100-499 | ◐ LIKELY ACTIVE |
| GFGillette Fill Plant | Gillette | WY | Chemical Manufacturing325120 | 1-19 | ◐ LIKELY ACTIVE |
| LILinde Inc 604 Green River | Green River | WY | Chemical Manufacturing325120 | 1-19 | ◐ LIKELY ACTIVE |
| LILinde Inc 618 Green River | Green River | WY | Chemical Manufacturing325120 | 1-19 | ◐ LIKELY ACTIVE |
| MSMining Services | Gillette | WY | Chemical Manufacturing325920 | 20-99 | ◐ LIKELY ACTIVE |