Applicability of short-period delay detonators in safety-lamp mines
By: by J. Hancock, W. Taylor and H.C. Grimshaw
Contributors: Hancock, J.
Series: Research reports series -- no. 45; Research report (Safety in Mines Research Establishment (Great Britain)) -- no. 45.
Publisher: Safety in Mines Research Establishment
Published: 1952
Language: eng
Number of pages: 46