Simple Magnetic Method for Ore Prospecting
MAGNETIC methods have been used for more than three hundred years in prospecting for magnetic ores . More recently magnetic methods have been used for finding salt domes and studying certain geological formations. A number of instruments have been developed and substantial improvements made as to their sensitiveness and accuracy.
earth magnetic field, north pole, ore, prospector, Information, North, Ore, Ores, Permeability, Prospecting, Rock, Survey, Surveys