GRUNWALD ROSS R GEOLOGY AND MINERAL DEPOSITS OF THE GALENA MISTRICT BLACK HILLS SOUTH DAKOTA PH D THESIS SOUTH DAKOTA SCMINES AND TECHNOLOGY 1970 285 PPSHAPIRO L H AND GRIES J P ORE DEPOSITS IN ROCKS OF PALEOZOICRTIARY AGE OF THE NORTHERN BLACK HILLS SOUTH DAKOTA 1970 110CONNOLLY, J P 1927,THE TERTIARY MINERALIZATION OF THE NORTHEK HILLS; S DAK.SCHOOL OF MINES BULL 15,130 PROBERTS W L AND COPE,SH 1969 UTILIZATION OF MINE DUMTS IN THHILLS, S DAKOTA: S.DAKOTA SCHOOL OF MINES AND TECHNOLOGY ENGG AND MINING EXPERIMENT STATION UNPUB RPT 71PU S BUREAU OF MINES 1954 BLACK HILLS MINERAL ATLAS S DAKOTA:BUMINES IC 7688, 123P.