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Search U.S. government technical reports digitized or harvested by TRAIL.
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3 results returnedCementation of bituminous-coal-mine roof strata.
Costs of mining under bolted roof and timbered roof in bituminous coal mines
Hydraulic coal mining research :equipment and preliminary tests
Published Year
Subject
- Coal mines and mining (3) *
- Bituminous coal (1)
- Coal--Research (1)
- Hydraulic mining (1)
- Mine roof control (1)
Author
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