Procedure for applying for tests made on all explosives and blasting devices by the Explosives Division of the Bureau of Mines, prescribed conditions and requirements for permissibility when used in coal mines and schedule of fees for the tests.

Bibliographic Details

Corporate Author:	United States. Bureau of Mines
Format:	Government Document eBook
Language:	English
Published:	[Washington] : [s.n.], 1939.
Subjects:	Explosives. Coal mines and mining.
Online Access:	Electronic resource (PDF)