A field test of electromagnetic geophysical techniques for locating simulated in situ mining leach solution.
Tweeton-DR; Hanson-JC; Friedel-MJ; Sternberg-BK; Dahl-LJ
Minneapolis, MN: U.S. Department of the Interior, Bureau of Mines, RI 9505, 1994 Jan; :1-34
The U.S. Bureau of Mines, the University of Arizona, Sandia National Laboratory, and Zonge Engineering and Research, Inc., conducted cooperative field tests of six electromagnetic geophysical methods to compare their effectiveness in locating a brine solution simulating in situ leach solution or a high-conductivity plume of contamination. The brine was approximately 160 meters below the surface. The test site was the University's San Xavier experimental mine near Tucson, Arizona. Geophysical surveys using surface and surface-borehole time-domain electromagnetics (TEM), surface controlled source audio-frequency magnetotellurics (CSAMT), surface-borehole frequency-domain electromagnetics (FEM), crosshole FEM and surface magnetic field ellipticity were conducted before and during brine injection.
Mining-industry; In-situ-mining; Electromagnetic-fields; Analytical-processes; Field-tests; Geophysical-surveys; Boreholes; Electromagnetic-induction; Telluric-current-exploration; Test-methods; Brines; Plume-detection; Geophysics; Solution-mining; Leaching; Environmental-monitoring
Report of Investigations
NTIS Accession No.
Minneapolis, MN: U.S. Department of the Interior, Bureau of Mines, RI 9505