INVESTIGATION OF ROCK DEPOSITS

RECONNAISSANCE DE GISEMENTS ROCHEUX

THE METHOD OF ROCK DEPOSIT INVESTIGATION PROPOSED USES EXPLORATORY BORING BY MEANS OF DRILL HAMMERS TOGETHER WITH OBSERVATIONS AND TESTS ON SPLINTERS, AND DRILLING VELOCITY LOGGING, NATURAL OR SELECTIVE RADIOACTIVE LOGGING, NEUTRON-NEUTRON, GAMMA-GAMMA, AND CONTINUOUS AND DISCONTINUOUS SONIC LOGGING. THE RESEARCH IS COMPLETED BUT FOR THE FINAL DEVELOPMENT OF THE SENSITIVE PHOTO PROBE, WHICH WILL BE CONDUCTED IN 1979.