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Subject
- Environmental aspects58
- Mines and mineral resources31
- Oil spills23
- Petroleum industry and trade23
- Geology21
- History19
- Exxon Valdez (Ship)17
- Aeronautics14
- Petroleum13
- Accidents11
- Bush pilots11
- Gold mines and mining11
- Exxon Valdez Oil Spill, Alaska, 19899
- Oil and gas leases9
- Tankers9
- Petroleum pipelines8
- Oil well drilling7
- Petroleum engineering7
- Pollution7
- Continental shelf6