A new twelve-shot exploder for gassy mines
By: by H.T. Ramsay and D.W. Widginton
Contributors: Ramsay, H. T.
Series: Research reports -- no. 160; Research report (Safety in Mines Research Establishment (Great Britain)) -- no. 160.
Publisher: Safety in Mines Research Establishment
Published: 1959
Language: eng
Number of pages: 20