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Gamma Ray Measurement - Dr. Richard P. Von Herzen, left and Dr. Arthur E. Maxwell, of Woods Hole Oceanographic Institution, were Co-Chief Scientists on the third leg of the DSDP. The two scientists are examining a Gamma Ray Attenuation Porosity Evaluation machine in the Scientific Laboratory aboard the drilling ship Glomar Challenger. The machine measures by attenuation of Gamma Rays, the bulk density of sediments

Gamma Ray Measurement - Dr. Richard P. Von Herzen, left and Dr. Arthur E. Maxwell, of Woods Hole Oceanographic Institution...