Procedure for applying for tests made on explosives <including sheathed explosives> and blasting devices by the Bureau of Mines
Subtitle: Prescribed conditions and requirements for permissibility when used in coal mines and schedule of fees for the tests
Series: Its Schedule -- 1D
Publisher: U.S. Govt. Print. Off.
Published: 1944
Place of publication: Washington
Language: eng
Number of pages: 16
Subjects: Explosives; Testing; Blasting
Notes: At head of title: ... United States Dept. of the Interior. Harold L. Ickes, secretary. Bureau of Mines. R.R. Sayers. director.

"Approved December 28, 1943."