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Electrical Resistivity is measured with potential electrodes at the time of the injection of an electrical field to the ground with a specific dimension and intensity. Different materials in the ground either favor or resist the flow of current, which permits classifying them from their electrical characteristics. A conductor material (or low resistivity) may be an altered or fractured rock or massive metallic mineralization, while a resistive material usually represents a compact and less porous rock or formation. Asides from mining applications, Resistivity is also used in geotechnical applications and groundwater exploration.