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GEOPHYSICAL METHODS TO DETECT STRESS IN UNDERGROUND MINES . By Douglas F. Scott, 1. 1. Geologist, Spokane Research Laboratory, National Institute for Occupational Safety and Health, Spokane, WA. Theodore J. Williams, 2. David K. Denton, 2. 2. Mg engeer, Spokane Research Laboratory, National Institute for Occupati onal Safety and Health, Spokane, WA.

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