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The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
(first | last) View (previous 20 | next 20) (20 | 50 | 100 | 250 | 500)- Denmark (18 members)
- Deutsche ReGas (1 member)
- Downstream (1 member)
- Dragon Oil (1 member)
- EDF (1 member)
- ENI (28 members)
- Ecopetrol (5 members)
- Egypt (17 members)
- El Salvador (1 member)
- EnQuest (3 members)
- Enbridge (12 members)
- Endesa (8 members)
- Eneos (6 members)
- Energean (2 members)
- Energy Transfer (5 members)
- Engie (1 member)
- Engineering (27 members)
- Enquest (1 member)
- Enterprise (4 members)
- Equatorial Guinea (2 members)