| Reference | {Deposit:: OFFICE OF ORE EST MINES DIRECTORY U OF MN 19}{Deposit:: PART OF BUTLER TACONITE OPERATION}{Deposit:: NELLE S SNYDER BUTLER BROS 1959}{Reserve-Resource:: MINERAL RESOURCES RESEARCH CENTER. MINNESOTA MINING}{Reserve-Resource:: DIRECTORY - 1981 ED. BY W.D. TRETHEWAY. UNIV. OF MINN.,}{Reserve-Resource:: MINNEAPOLIS, MINN., 1981, P. 149} |