APPROXIMATELY LOCATED IN OR AROUND THE AURA MINING DISTRICT; MLA 17-92; BUREAU OF MINES UNITED STATES DEPARTMENT OF THE INTERIOR; OPEN FILE REPORT/1992; ONLY TILE PAGES COPIED AND SCANNED SEE FILE FOR WHOLE REPORT ; AUTHOR: BUREAU OF MINES.; SCHMAUCH, S.W.; GABBY, P.N.; LIPTON, D.A.