Permissible explosives, mining equipment, and apparatus approved prior to Mar. 15, 1922.

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Bibliographic Details
Online Access:	Full Text (via ProQuest)
Corporate Author:	United States. Department of Commerce
Format:	Government Document eBook
Language:	English
Published:	[Washington] : GPO, 1922.
Subjects:	Explosives. Mines and mineral resources. Machinery. Lamps.

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Full Text (via ProQuest)

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Call Number:	I28.7-307
I28.7-307	Available