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Left to right: Scientist Michael Arthur, of Princeton University; David Johnson from EXXON Production Research Company, Houston, Texas; and Jean Claude Sibuet Co-Chief Scientist on Leg 47B of the Deep Sea Drilling Project. They are shown aboard the D/V Glomar Challenger (ship) taking geochemistry samples from black shale recovered at Site 398 during Leg 47B of the Deep Sea Drilling Project. 1976.

Left to right: Scientist Michael Arthur, of Princeton University; David Johnson from EXXON Production Research Company, Ho...