L. D. Tracy
4 known books
newest first
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Books
OpenLibrary works by this author.
Mine-water neutralizing plant at ...
Mine-water neutralizing plant at Calumet Mine
1921
Coal-dust hazards in industrial p...
Coal-dust hazards in industrial plants
Year unknown
Explosion hazards from the use of...
Explosion hazards from the use of pulverized coal at industrial plants
Year unknown
Explosion hazards incidental to u...
Explosion hazards incidental to unwatering coal mines
Year unknown
L. D. Tracy and United States. Bureau of Mines
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