A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Drilling and blasting at the Ojuela drainage tunnel
Driving of 5405 ft. drainage tunnel by Compania Minera de Penoles, S. A. at Ojuela, Durango, Mex., in 8 months was made possible by complete mechanization of all operations; driven through interbedded shales and limestones; mechanical loaders; ventilating equipment; standardization of drill round; handling explosives; best day's advance was 42 ft.
Drilling and blasting at the Ojuela drainage tunnel
Driving of 5405 ft. drainage tunnel by Compania Minera de Penoles, S. A. at Ojuela, Durango, Mex., in 8 months was made possible by complete mechanization of all operations; driven through interbedded shales and limestones; mechanical loaders; ventilating equipment; standardization of drill round; handling explosives; best day's advance was 42 ft.
Drilling and blasting at the Ojuela drainage tunnel
Explosives Engr
Hezzelwood, G.W. (author)
1928
4 pages
9 Figs.
Article (Journal)
English
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