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Search U.S. government technical reports digitized or harvested by TRAIL.
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6 results returnedPermissible mine equipment approved during the calendar years 1947-49
Permissible mine equipment approved during the calendar year 1950
Permissible mine equipment approved during the calendar years 1953-54
Published Year
Subject
- Coal-mining machinery--Standards--United States (2)
- Mining machinery--Standards--United States (2)
- Coal mines and mining--United States--Safety measures (1)
- Electricity in mining (1)
- Loaders (Machines) (1)
- Mine safety--United States--Equipment and supplies (1)
- Mining machinery (1)
- Mining machinery--Electric equipment--Testing (1)
Author
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