A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Studies of roof movement in coal mines -- II, crucible mine of crucible fuel company
Continuation of series last indexed in Engineering Index 1938 p 250, from Report Investigations n 3355; nature and physical properties of strata; tests of timbers; underground measurements; surface measurements; behavior of Pittsburgh sandstone is principal factor in roof and floor movement.
Studies of roof movement in coal mines -- II, crucible mine of crucible fuel company
Continuation of series last indexed in Engineering Index 1938 p 250, from Report Investigations n 3355; nature and physical properties of strata; tests of timbers; underground measurements; surface measurements; behavior of Pittsburgh sandstone is principal factor in roof and floor movement.
Studies of roof movement in coal mines -- II, crucible mine of crucible fuel company
U S Bur Mines -- Report Investigations
Maize, E.R. (author) / Greenwald, H.P. (author)
1939
19 pages
Supp plates
Report
English
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