| Company |
| American Electric Power |
| Austin Powder |
| Bryants Shell and Grocery |
| Cabot Oil and Gas |
| Cargo Oil |
| City of Gary |
| City of Welch |
| Clowser Production Co (Olga Coal) |
| Dominion Exploration |
| Dominion Transmission |
| Equitable |
| Ferrell Gas |
| Frontier |
| GeoMet |
| HC Lewis Oil |
| McDowell County PSD |
| McDowell County School |
| Pinnacle Mining |
| SUPC (Seneca South Field) WV |
| Superior Wells |
| Verizon |