| Business | Phone |
| Amtex Oil & Gas Inc Oil & Gas 1202 Richardson Dr 309, Richardson 75080 | (469) 916-4979 |
| Gop Inc Oil & Gas 1202 Richardson Dr, Richardson 75080 | (469) 916-4976 |
| Mahfouz Energy Co 403 Ridge Crest Dr, Richardson 75080 | (972) 234-1813 |
| Pagoda Oil 922 Prestwick Ln, Richardson 75080 | (972) 690-8946 |
| Patriot Oil & Gas Llc 2083 N Collins Blvd, Richardson 75080 | (972) 671-2259 |
| Spindletop Oil & Gas Co 331 Melrose Dr, Richardson 75080 | (972) 644-4710 |
| Headline Resources Inc Po Box 836348, Richardson 75083 | (972) 377-7131 |