With the progressive exhaustion of ore deposits easily discovered by surface prospecting, the attention of scientists is being turned more and more to the employment of mechanical means for the location of ore bodies whose outcrops are not visible. The dip needle, the Eotvos Torsion balance, and various methods of electrical prospecting are illustrative of the modem tendency.
Keywords: country rock, electric current, equipotential, potentiometer, Schlumberger, Deposits, Electrical, Electrodes, Ore, Ores, Profiles, Prospecting, Veins
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