The effect of stemming on the efficiency of explosives
By: by Walter O. Snelling and Clarence Hall.
Contributors: Hall, Clarence
Series: [U.S.] Bureau of Mines. Technical paper 17
Publisher: Govt. print. off.
Published: 1912
Place of publication: Washington
Language: eng
Number of pages: 20
Subjects: Explosives
Notes: At head of title:  Department of the Interior.  Bureau of Mines.  Joseph A. Holmes, director.
"Publications on mine accidents and tests of explosives": p. 19-20.