DIRECTORY OF COAL MINE OPERATORS AND REPORT OF COAL PRODUCTION Click these PDF Files to View or Download   1929 Logan County Mines Table    1946 Logan County Mines Table 1 1946 Logan County Mines Table 2 1948 Logan County Mines Table 1 1948 Logan County Mines Table 2 1949 Logan County Mines Table 1 1949 Logan County Mines Table 2 1950 Logan County Mines Table 1 1950 Logan County Mines Table 2 1951 Logan County Mines Table 1 1951 Logan County Mines Table 2