Mining Publication: Electromagnetic Technique for Locating Boreholes
The Bureau of Mines has developed hardware for electromagnetic (EM) detection and location of miners trapped in underground coal mines. This report describes a technique for using the developed equipment for locating uncased boreholes underground. Results of several field and laboratory experiments are described.
Report of InvestigationsJanuary - 1978
NIOSHTIC2 Number: 10001248
Pittsburgh, PA: U.S. Department of the Interior, Bureau of Mines, RI 8302, 1978 Jan; :1-14