| Business | Phone |
| David A Blackerby 8531 N New Braunfels Ave, San Antonio 78217 | (210) 820-3009 |
| Concord Oil Co 100 W Houston St # 1500, San Antonio 78205 | (210) 224-4455 |
| Guy Spiller Po Box 791514, San Antonio 78279 | (210) 822-0322 |
| James C Durbin Jr 900 Ne Loop 410, San Antonio 78209 | (210) 826-3963 |
| James G Richter 8151 Broadway St, San Antonio 78209 | (210) 820-3363 |
| Peacock Oil Properties 1100 Ne Loop 410 724, San Antonio 78209 | (210) 824-1471 |
| Three Rivers Energy 7898 Broadway St, San Antonio 78209 | (210) 828-4300 |
| San Miguel Resources Inc 1250 Ne Loop 410, San Antonio 78209 | (210) 826-5536 |
| Txs Minerals Llc 8626 Tesoro Dr, San Antonio 78217 | (210) 828-1104 |
| W A Buntin 8626 Tesoro Dr, San Antonio 78217 | (210) 826-8039 |
| Cls Resources Inc 14100 San Pedro Ave 316, San Antonio 78232 | (210) 545-1225 |
| Lonestar Petroventures Inc 12915 Jones Maltsberger 305, San Antonio 78247 | (210) 495-1600 |