Department 200 - Mining and Minerals
Metal Mine Workers Industrial Union 210
All workers engaged in mining all metals and minerals. All workers in refineries, smelters, mills, and other reduction works. All workers in stone and other quarries.
Coal Mine Workers Industrial Union 220
All workers engaged in coal mining and the production of coke and briquets.
Oil, Gas, and Geothermal Workers Industrial Union 230
All workers engaged in oil, gas, and geothermal, fields, refineries and processing facilities. All workers engaged in distribution of the products.