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Costs of mining under bolted roof and timbered roof in bituminous coal mines

Hydraulic coal mining research :assessment of parameters affecting the cutting rate of bituminous coal

Published Year

• 1960-1969 (2)

Subject

• Bituminous coal (2) *
• Coal mines and mining (1)
• Hydraulic mining (1)

Author

• Wallace, Joseph J. (2) *
• Ackerman, M. J. (1)
• Fowkes, Richard S. (1)

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