| Reference | {Deposit:: US BUREAU OF MINES STAFF,1954,REG V,1 INFO CIRCULAR 7688 P 7}{Deposit:: BALDWIN,G,1904,BLACK HILLS ILLUS BLAK HI LLS MIN. ME* ASSO}{Deposit:: STATE MINE INSPECTOR,ANNUAL REPORTS:1893,1896,1915,1916}{Deposit:: IRVING,1904,USGS PROF PAPER 26 P 210}{Deposit:: SHAPIRO & GRIES,1970,USGS HEAVY METALS PROGRAM CONTRACT #14-}{Deposit:: -10650 P 121} |