A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Mine roof, treated timber and simple arithmetic
Costs can be cut, safety and productivity improved with proper use of treated timbers in underground coal mine roof support program; not all mine timber are used where long life is desirable; about 15 to 20% used for permanent work; timber requiring only one replacement should be treated; costs given.
Mine roof, treated timber and simple arithmetic
Costs can be cut, safety and productivity improved with proper use of treated timbers in underground coal mine roof support program; not all mine timber are used where long life is desirable; about 15 to 20% used for permanent work; timber requiring only one replacement should be treated; costs given.
Mine roof, treated timber and simple arithmetic
Mechanization
Bray, J.M. (author)
Mechanization ; 13
1949
Article (Journal)
English
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