| Reference | {Deposit:: PHALEN, W.C., 1913, SULPHUR, PYRITE, AND SULPHURIC ACID, IN U.S. GEOLOGICAL SURVEY, MINERAL RESOURCES OF THE UNITED STATES, CALENDAR YEAR 1912, PART 2 - NONMETALS: P. 931-953.}{Deposit:: WATSON, T.L., 1920, VIRGINIA, IN SMITH, P.S., SULPHUR, PYRITES AND SULPHURIC ACID, IN U.S. GEOLOGICAL SURVEY, MINERAL RESOURCES OF THE UNITED STATES, 1917, PART 2 - NONMETALS: P. 51-55.}{Deposit:: 1910 DIREXPL SHAFT SUNK}{Deposit:: 1918 DIREXPL ADDITIONAL EXPLORATION CONDUCTED}{Production:: PHALEN (1913)} |