| 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. 73.}{Deposit:: BUTTS, CHARLES, 1927, DESCRIPTION OF THE BESSEMER-VANDIVER QUADRANGLES, ALABAMA: U.S. GEOLOGICAL SURVEY ATLAS FOLIO 221} |