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Official Changes in the Active List of Permissible Explosives and Blasting Devices for February, 1930

Arthur William FahrenwaldDaniel HarringtonEarl Carlton LaneEdmund Spriggs LeaverFrank Arthur PattyFrank S. WartmanGeorge Samuel RiceGeorge St. John PerrottHenry Alfred DoernerLudwig SchmidtMartin Joseph GavinPercy NichollsR. D. LeitchRudolph Richard BrandenthalerScott TurnerSelwyne Perez KinneySpencer Pritchard HowellWilliam W. OdellArch L. FosterD. B. GawthropHarold Putnam GreenwaldJesse A. WoolfNoah Arthur TolchW. S. MorrisW. T. BoyerWilliam Parks YantC. A. TaylorC. R. BoppHenry C. Howarth

出版	U.S. Department of the Interior, Bureau of Mines, 1929
URL	http://books.google.com.hk/books?id=_uY20QEACAAJ&hl=&source=gbs_api