| Reference | {Deposit:: OFFICE OF ORE EST MINES DIRECTORY U OF MN 19}{Deposit:: SARGENT LAND CO HANNA COAL & ORE CORP 1957}{Reserve-Resource:: MINERAL RESOURCES RESEARCH CENTER. MINNESOTA MINING}{Reserve-Resource:: DIRECTORY - 1981, ED. BY W.D. TRETHEWAY. UNIV. OF MINN.,}{Reserve-Resource:: MINES DIRECTORY U OF MN 1 183.} |