| Business | Phone |
| Asarco Inc 495 E 51st Ave, Denver 80216 | (303) 296-5900 |
| International Uranium Corp 1050 17th St # 950, Denver 80265 | (303) 628-7798 |
| Placerdome America 1125 17th St # 2310, Denver 80202 | (303) 675-0055 |
| Newmont Mining Corp 1700 Lincoln St, Denver 80203 | (303) 863-7414 |
| Borehole Mining Intl Inc 4871 S Dudley St, Denver 80123 | (303) 904-2725 |