title | nationalIndustry |
---|---|
Bituminous coal underground mine site development for own account | Bituminous Coal Underground Mining |
Bituminous coal underground mining or mining and beneficiating | Bituminous Coal Underground Mining |
Coal, bituminous, underground mining or mining and beneficiating | Bituminous Coal Underground Mining |
Semianthracite underground mining or mining and beneficiating | Bituminous Coal Underground Mining |
Semibituminous coal underground mining or mining and beneficiating | Bituminous Coal Underground Mining |
Subbituminous coal underground mining or mining and beneficiating | Bituminous Coal Underground Mining |