Reference | {Deposit:: EDMUNDSON, R.S., 1938, BARITE DEPOSITS OF VIRGINIA: VIRGINIA GEOLOGICAL SURVEY BULLETIN 53, 85 P.}{Deposit:: ANDREWS, L.E., 1952, STRUCTURE OF THE AREA NORTH OF ROANOKE, VIRGINIA: UNPUBLISHED PHD THESIS, JOHN HOPKINS UNIVERSITY.}{Deposit:: DIREXPL ? - DUG 4 OPEN CUT} |