| Business | Phone |
| Brs Mining Inc 2120 W Ina Rd, Tucson 85741 | (520) 297-7053 |
| Independent Mining Consultants 2700 E Executive Dr # 140, Tucson 85706 | (520) 294-9861 |
| Split Engineering Llc 110 S Church Ave # 8312, Tucson 85701 | (520) 327-3773 |
| Sage Associates 2420 N Huachuca Dr, Tucson 85745 | (520) 623-3090 |
| Performance Associates Intl 10195 N Oracle Rd # 105, Tucson 85704 | (520) 544-2220 |
| Phillips Mining Geotech Inc 8640 N Glenhurst Pl, Tucson 85704 | (520) 297-2162 |
| Minerals Advisory Group 1 W Wetmore Rd # 207, Tucson 85705 | (520) 887-7357 |
| Mintec Inc 3544 E Fort Lowell Rd, Tucson 85716 | (520) 795-3891 |