Of the total value of metals produced, slightly in excess of may be credited to the silver deposits, from to to tungsten, and the balance of from to to gold. Despite the value of metals produced, but little geological work had been carried on in the Randsburg quadrangle previous to 1923, the report of Mr. F. L. Hess of the United States Geological Survey published in 1910 comprising practically the only data available to the public.