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Search U.S. government technical reports digitized or harvested by TRAIL.
Keyword Search
4 results returnedPublished Year
Subject
- Coal--Analysis (3)
- Coal mines and mining (1)
- Coal--Arkansas (1)
- Coal--Kansas (1)
- Coal--Oklahoma (1)
- Mine timbering (1)
- Mining law (1)
Author
- Geyer, John Nicholas, (4) *
- Cooper, Harry Mac, (3)
- Fieldner, Arno Carl, (3)
- Snyder, Ned H. (3)
- Osgood, Fred D. (2)
- Branner, George Casper, (1)
- Cooper, C. L. (1)
- Herbert, Charles Arthur, (1)
- Moore, Raymond C. (1)
- Osgood, F. D. (1)
- Owings, C. W. (1)
- Paul, J. W. (1)
- Plein, Leopold Nicholas, (1)
- Tryon, F. G. (1)
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