Reference | {Deposit:: DIETRICH, R.V., 1954, GEOLOGY OF THE PILOT MOUNTAIN AREA, VIRGINIA: BULLETIN OF THE VIRGINIA POLYTECHNIC INSTITUTE, ENGINEERING EXPERIMENT STATION SERIES NO. 91, V. 47, NO. 4, 32 P.}{Deposit:: DIETRICH, R.V., 1959, GEOLOGY AND MINERAL RESOURCES OF FLOYD COUNTY OF THE BLUE RIDGE UPLAND, SOUTHWESTERN VIRGINIA: BULLETIN OF THE VIRGINIA POLYTECHNIC INSTITUTE, ENGINEERING EXPERIMENT STATION SERIES NO. 134, V. 52, NO. 12, 160 P.}{Deposit:: DIREXPL SHAFT AND ADIT DRIVEN, NO MINING} |