Reference | {Deposit:: BURCHARD, E.F. AND BUTTS, CHARLES, 1910, IRON ORES FUELS AND FLUXES OF THE BIRMINGHAM DISTRICT, ALABAMA: U.S. GEOLOGICAL SURVEY BULL 400, P. 56, 57.}{Deposit:: BUTTS, CHARLES, 1910, DESCRIPTION OF THE BIRMINGHAM QUADRANGLE (ALABAMA): U.S. GEOLOGICAL SURVEY GEOL. ATLAS FOLIO 175.} |