The mine explosion at Johnstown
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M.G. Moore
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Article
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1904
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Elsevier Science
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English
โ 732 KB
## THE FRANKLIN INSTITUTE. โข Communicated by the Author to the Stated Meeting, held Wednesday, April zS, zgo 3. The Mine Explosion at Johnstown. BY M. G. MOORE, Miuing Engineer in charge of the Mining and Coking Department of the Cambria Steel Company. On the tenth day of July, 1902 , there was