Item talk:Q105796
From geokb
An experiment to test hole-to-hole resistivity measurements for locating mine openings in coal seams
Hole-to-hole resistivity measurements can be useful for interpreting resistivity anomalies that are located too far away from the borehole to be detected with conventional well logging probes. Hole-to-hole direct current resistivity measurements are shown in this study to be useful for detecting mine openings in a coal seam.