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Permissible explosives approved prior to June 30, 1927 / by G. St. J. Perrott and S.P. Howell.

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Bibliographic Details
Main Author:	Perrott, George St. J. (George St. John), 1893-1980
Corporate Author:	United States. Bureau of Mines
Other title:	Permissible explosives.
Format:	Government Document Book
Language:	English
Published:	Washington : U.S. G.P.O., 1927.
Series:	Report of investigations (United States. Bureau of Mines) ; 2818.
Subjects:	Explosives. Coal mines and mining > Explosives.

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Permissible explosives approved prior to June 30, 1927

Published 1927

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Permissible explosives approved prior to June 30, 1927.

Published 1927

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Permissible explosives tested prior to January 1, 1912 and precautions to be taken in their use / by Hall, Clarence

Published 1912

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Permissible explosives tested prior to ... /

Published 1911

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