| Business | Phone |
| Eighty-Eight Oil Co 1801 Broadway, Denver 80202 | (303) 629-7577 |
| Equilon Enterprises 1700 Broadway, Denver 80290 | (303) 318-7520 |
| High Sierra Resources Denver 80212 | (303) 232-7751 |
| Pinon Resources Inc 203 Jackson St, Denver 80206 | (303) 831-4732 |