Electromagnetic technique for locating boreholes.
Pittsburgh, PA: U.S. Department of the Interior, Bureau of Mines, RI 8302, 1978 Jan; :1-14
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.
Mining-industry; Electromagnetic-energy; Electromagnetic-fields; Electromagnetic-radiation; Underground-mining; Radio-waves; Coal-mining; Emergency-response; Mine-rescue
IH; Report of Investigations
NTIS Accession No.
Pittsburgh, PA: U.S. Department of the Interior, Bureau of Mines, RI 8302