Reference | {Deposit:: CAMPBELL, A. B., 1960 , GEOLOGY AND MINERAL DEPOSITS OF THE ST. REGIS - SUPERIOR AREA, MINERAL COUNTY, MONTANA: U. S. GEOLOGICAL SURVEY BULL. 1082 - I, P. 590 - 593}{Deposit:: YOUNG, FRANCIS M., CROWLEY, FRANK A., SAHINEN, UUNO M., 1962, MARKETING PROBLEMS OF SMALL BUSINESS ENTERPRISES ENGAGED IN LEAD AND ZINC MINING, MONTANA BUR. OF MINES AND GEOLOGY BULL. 30, P. 31}{Production:: CAMPBELL, 1960 , GEOLOGY AND MINERAL DEPOSITS, ETC., P. 593} |