| Able Energy Co Inc | 812-422-4126 | 101 Court St | Evansville | IN | 47708 |
| Apollo America Corporation | 812-284-3300 | 701 Port Rd | Jeffersonville | IN | 47130 |
| Ashland Petroleum Co | 812-738-2265 | 1495 Highway 62 NE | Corydon | IN | 47112 |
| B P B Slimline Services Administrative Ofc | 812-424-0819 | 1609-B Allens Ln | Evansville | IN | 47710 |
| Barbarossa Oil Inc | 812-473-3212 | 1118 S Villa Dr | Evansville | IN | 47714 |
| Barger Engineering Inc | 812-476-3077 | 2116 Lincoln Ave | Evansville | IN | 47714 |
| Best Operating | 812-985-9966 | 6508 Uebelhack Rd | Mount Vernon | IN | 47620 |
| Blackjack Oil Corp | 812-386-7784 | 201 7th St | Princeton | IN | 47670 |
| Bullock Oil Co Inc | 812-273-3000 | 3508 N State Rd 7 | Madison | IN | 47250 |
| Campbell John H Engr Ofc | 812-426-2591 | 123 SE 2nd St | Evansville | IN | 47708 |
| Claremark Oil Inc | 812-985-3748 | 8720 Marx Rd | Mount Vernon | IN | 47638 |
| Conrady Oil Inc | 812-753-5837 | RR 2 | Fort Branch | IN | 47648 |
| Coy Oil Inc | 812-423-4241 | 2229 W Lloyd Expy | Evansville | IN | 47712 |
| Diversified Mineral & Land | 812-425-2490 | 1006 E Diamond Ave | Evansville | IN | 47711 |
| Ecus Corp | 812-838-4819 | 212-1/2 Main St | Mount Vernon | IN | 47620 |
| Egyptian Gas & Storage Co | 812-477-1575 | 1410 N Cullen Ave | Evansville | IN | 47715 |
| Energetics Inc | 812-853-5895 | 22 W Water St | Newburgh | IN | 47630 |
| Equinox Oil Co | 812-838-2914 | Murphy Rd | Mount Vernon | IN | 47620 |
| Gallagher Drilling Inc | 812-425-8256 | 115 SE 3rd St | Evansville | IN | 47708 |
| Gwaltney Drilling Inc | 812-743-5107 | RR 1 | Monroe City | IN | 47557 |
| Harris Exploration Company | 812-425-9411 | 111 Main St | Evansville | IN | 47708 |
| Hartshorne & Associates Engineering Inc | 812-769-5511 | RR 1 | Decker | IN | 47524 |
| K S Oil Corp | 812-985-9765 | 50 N Stierley Rd | Wadesville | IN | 47638 |
| Kelly Oil Co | 812-654-3551 | 201 N Main St | Milan | IN | 47031 |
| Kidd Drilling Inc | 812-386-6320 | 123 E State St | Princeton | IN | 47670 |
| Kiel Bros Oil Co Inc Corporate Ofc | 812-342-5700 | 3801 Tupelo Dr | Columbus | IN | 47201 |
| Lamar Properties | 812-464-2768 | 22 Chestnut St | Evansville | IN | 47713 |
| Lamar Properties Oil Prdcrs | 812-477-0159 | 22 Chestnut St | Evansville | IN | 47713 |
| Latex Petroleum | 812-421-1376 | 100 NW 2nd St | Evansville | IN | 47708 |
| Mc Crary Fred D | 812-354-6520 | RR 2 | Petersburg | IN | 47567 |
| Meade Oil Co | 812-386-6918 | RR 1 | Patoka | IN | 47666 |
| Midwestern Production Corp | 812-397-2491 | RR 2 | Shelburn | IN | 47879 |
| Monroe Oil Corp-Mobil Distributor | 812-738-3884 | 1101 Monroe St | Corydon | IN | 47112 |
| Moore Engineering & Production Co Inc | 812-479-1051 | 2104 Lincoln Ave | Evansville | IN | 47714 |
| Noah Petroleum Co The Oil Prdcrs | 812-422-1116 | 2229 Pennsylvania St | Evansville | IN | 47712 |
| Orleans Oil Co Inc | 812-865-3132 | 247 S Maple St | Orleans | IN | 47452 |
| Payne Geo A Petroleum Engineer | 812-853-3813 | 7588 Marywood Dr | Newburgh | IN | 47630 |
| Petro Union Inc | 812-424-6745 | 123 NW 4th St | Evansville | IN | 47708 |
| Pfaus Geo Sons Co Oils | 812-283-6697 | 800 Wall St | Jeffersonville | IN | 47130 |
| Portis Richard Oil Prdcrs | 812-425-5203 | 123 NW 4th St | Evansville | IN | 47708 |
| Quinn Energy Corp | 812-838-6843 | 212-1/2 Main St | Mount Vernon | IN | 47620 |
| Raney Oil Company | 812-689-4402 | 805 Tanglewood Rd | Osgood | IN | 47037 |
| Rossi Oil Co | 812-425-1761 | 3455 N 1st Ave | Evansville | IN | 47710 |
| Ryan Oil Co | 812-422-4168 | 218 Court Bldg | Evansville | IN | 47708 |
| Sater Enterprises | 812-477-1529 | 331 Kimber Ln | Evansville | IN | 47715 |
| Shell Bulk Plant | 812-749-3615 | Morton & West | Oakland City | IN | 47660 |
| Smith Wm H Jr | 812-477-1584 | 1521 S Green River Rd | Evansville | IN | 47715 |
| St Wendel Oil Field | 812-985-2048 | Damm Rd | Mount Vernon | IN | 47638 |
| Stegall Oil & Gas Properties | 812-479-1911 | 4900 Tippecanoe Dr | Evansville | IN | 47715 |
| Sun Exploration Co Inc | 812-425-2207 | 1004 Hulman Bldg | Evansville | IN | 47708 |
| United Resources Inc | 812-476-7556 | 1410 N Cullen Ave | Evansville | IN | 47715 |
| Wade Oil | 812-838-6110 | 130 W 5th St | Mount Vernon | IN | 47620 |
| Wheeler Oil Inc | 812-385-8746 | 927 S Main St | Princeton | IN | 47670 |
| Wichita Industries Inc | 812-789-2742 | RR 2 | Oakland City | IN | 47660 |
| Wilson Ralph O II Oil Prdcrs | 812-477-7701 | 671 S Hebron Ave | Evansville | IN | 47714 |
