| Reference | {Deposit:: SZABO, M.W., 1967, SAND AND GRAVEL IN ALABAMA: ALABAMA GEOLOGICAL SURVEY CIRC. 44,44P.}{Deposit:: DAVIS, E.G., AND SULLIVAN, G.V., 1971, RECOVERY OF HEAVY MINERALS FROM SAND AND GRAVEL OPERATIONS IN SOUTHEASTERN U.S.: U.S. BUREAU OF MINES REPT. INV. 7517, 25P.}{Deposit:: STATE OF ALABAMA, 1976, DIVISION OF SAFETY AND INSPECTION - STATISTICAL ANNUAL REPORT, FISCAL YEAR 1975 - 1976: DE-PARTMENT OF INDUSTRIAL RELATIONS, 62P.}{Production:: STATE OF ALABAMA, 1976, DEPT. INDUSTRIAL RELATIONS, FISCAL YEAR 1975 - 1976, P.46.} |