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On board the D/V Glomar Challenger (ship), during Leg 59 of the Deep Sea Drilling Project is John Usheer (right) the Associate Chief Scientist of the Deep Sea Drilling Project for Science Services. Here, he examines the seismic profiling record of Site 449 in the Philippine Sea along with David P. Mattey of Bedford College, University of London, England. 1978.

On board the D/V Glomar Challenger (ship), during Leg 59 of the Deep Sea Drilling Project is John Usheer (right) the Assoc...