| Reference | {Deposit:: BEG, M.A., 1980, ACTIVE MINES AND QUARRIES OF ALABAMA: ALABAMA GEOLOGICAL SURVEY SPEC. MAP 176.}{Deposit:: U.S. BUREAU OF MINES, 1980, SAND AND GRAVEL INDIVIDUAL RESPONDENT TOTALS IN THE COUNTIES OF ALABAMA:}{Deposit:: STATE OF ALABAMA, 1980, DIVISION OF SAFETY AND INSPECTION-STATISTICAL ANNUAL REPORT, FISCAL YEAR 1980: DEPARTMENT OF INDUSTRIAL RELATIONS, 53 P.}{Production:: U.S. BUREAU OF MINES, 1980, SAND AND GRAVEL UNPUB. DATA FOR COUNTIES IN ALABAMA, P. 2.} |