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| Amerada Hess Corp | 202-488-7750 | 1620 S Capitol St SE | Washington | DC | 20003 |
| Dresser Industries Inc | 202-296-3070 | 1100 Connecticut Ave NW | Washington | DC | 20036 |
| H & M Oil Company | 202-832-0959 | 3618 20th St NE | Washington | DC | 20018 |
| Hooker Dewest | 202-429-9510 | 2141 I St NW | Washington | DC | 20037 |
| Mobil Oil Corporation Governme | 202-862-1300 | 1250 H St NW | Washington | DC | 20005 |