TABLE 175.-Number of employees in each race in the bituminous coal mines and coke plants, by occupation-Continued. NUMBER 3. (COAL MINING EXCLUSIVELY.) TABLE 175.-Number of employees of each race in the bituminous coal mines and coke plants, by occupation-Continued. NUMBER 4. (COAL MINING EXCLUSIVELY.) TABLE 175.—Number of employees of each race in_the_bituminous coal mines and coke plants, by occupation-Continued. NUMBER 5. (COAL MINE AND COKE PLANT.) |