Grayson County Historical Production Figures

YEAR  SURFACE  UNDERGROUND  TOTAL
1948 9,211 - 9,211
1949 402,977 - 402,977
1950 154,694 - 154,694
1951 16,000 - 16,000
1954 - 5,000 5,000
1955 500 - 500
1956 400 - 400
1957 1,125 - 1,125
1958 1,886 - 1,886
1960 2,373 - 2,373
1961 3,040 - 3,040
1962 1,600  - 1,600
1963 300  - 300
1964 175  -  175
1975 40,292 - 40,292
1976 11,311 - 11,311
1977 63,500 - 63,500
1978 70,173 - 70,173
1979 69,535 - 69,535
1980 25,668 - 25,668
1982 1,866 - 1,866
1984 2,000 - 2,000
1985 39,562 - 39,562

*NOTE:  

Source: