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Search U.S. government technical reports digitized or harvested by TRAIL.
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2 results returnedDevelopment and safety of the storage-battery locomotive
Hazards of the trolley-locomotive haulage system in coal mines
Published Year
Subject
- Coal mines and mining--Safety measures (2) *
- Mine haulage--Safety measures (2)
- Mine railroads--Safety measures (2) *
Author
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