| Reference | {Deposit:: BEG, M.A., 1980, ACTIVE MINES AND QUARRIES OF ALABAMA: ALABAMA GEOLOGICAL SURVEY SPEC. MAP 176.}{Deposit:: STATE OF ALABAMA, 1980, DIVISION OF SAFETY AND INSPECTION - STATISTICAL ANNUAL REPORT, FISCAL YEAR 1980: DEPARTMEN-T OF INDUSTRIAL RELATIONS, 53P.}{Deposit:: U.S. BUREAU OF MINES, 1980, SAND AND GRAVEL INDIVIDUAL RESPONDENT TOTALS IN COUNTIES OF ALABAMA: U.S. BUREAU OF MI-NES UNPUBLISHED DATA, 4P.}{Production:: STATE OF ALABAMA, DEPT. INDUSTRIAL RELATIONS, F.Y. 1980, P.40.} |