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Search U.S. government technical reports digitized or harvested by TRAIL.
Keyword Search
5 results returnedElectrical blasting practice as some coal mines in state of Washington
Systematic timbering rules at the Washington coal mines
Explosions in Washington coal mines
Published Year
Subject
- Coal mines and mining--Washington (State) (5) *
- Blasting (1)
- Mine drainage (1)
- Mine explosions (1)
- Mine roof control--Washington (State) (1)
- Mine timbering--Washington (State) (1)
Author
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