| Reference | {Deposit:: BEG, M.A., 1980, ACTIVE MINES AND QUARRIES OF ALABAMA: ALABAMA GEOL SURVEY SPEC. MAP 176.}{Deposit:: U.S. BUREAU OF MINES, 1980, SAND AND GRAVEL INDIVIDUAL RESPONDENT TOTALS IN COUNTIES OF ALABAMA: U.S. BUREAU OF MINES. UNPUB. DTA, 4P.}{Production:: U.S. BUREAU OF MINES, 1980, SAND AND GRAVEL UNPUB. DATA FOR COUNTIES IN ALABAMA, P.2.} |