A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
June 1929 n 64 p 209-212: Advantages of steel props; rigid and non-rigid steel props; practical points in use of steel props; Security Tubular, Butterley, and Huwood steel pit props: Aug 1929 n 66 p 316-318, 10 figs.: Berisford, Newsarre self-adjusting, and S. F. patent pit props are described.
June 1929 n 64 p 209-212: Advantages of steel props; rigid and non-rigid steel props; practical points in use of steel props; Security Tubular, Butterley, and Huwood steel pit props: Aug 1929 n 66 p 316-318, 10 figs.: Berisford, Newsarre self-adjusting, and S. F. patent pit props are described.
Steel pit props
Colliery Eng
Roberts, J.H. (author)
Coal Age ; 6
1929
Article (Journal)
English
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