A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Steel arching and maintenance of roadways in area adjacent to coal face; practice in Gelli Deg seam of Cymmer coal mine at Porth; discussion of roof control and comparison of steel and timber props; yield of props under load; composite props; adjustable props. (See also - no. 3614, Apr. 4, 1930, pp. 1279-1283, (discussion), no. 3616 Apr. 18, pp. 1465-1467, 21 figs., also discussions in no. 3621, May 23, 1930, pp. 1949-1950 and no. 3622 May 30, pp. 2032-2034; S. Wales Inst. Engrs. -- Proc., vol. 46, no. 3, May 8, 1930, pp. 145-200 and (discussion) 200-220; Iron and Coal Trades Rev., vol. 120, no. 3242, Apr. 18, 1930, pp. 638-640, 2 figs. and discussion in nos. 3248 and 3249, May 30, 1930, p. 875 and June 6, p. 915)
Steel arching and maintenance of roadways in area adjacent to coal face; practice in Gelli Deg seam of Cymmer coal mine at Porth; discussion of roof control and comparison of steel and timber props; yield of props under load; composite props; adjustable props. (See also - no. 3614, Apr. 4, 1930, pp. 1279-1283, (discussion), no. 3616 Apr. 18, pp. 1465-1467, 21 figs., also discussions in no. 3621, May 23, 1930, pp. 1949-1950 and no. 3622 May 30, pp. 2032-2034; S. Wales Inst. Engrs. -- Proc., vol. 46, no. 3, May 8, 1930, pp. 145-200 and (discussion) 200-220; Iron and Coal Trades Rev., vol. 120, no. 3242, Apr. 18, 1930, pp. 638-640, 2 figs. and discussion in nos. 3248 and 3249, May 30, 1930, p. 875 and June 6, p. 915)
Steel arches and steel props for underground support
Colliery Guardian
James, R. (author)
Colliery Guardian ; 140
1930
5 pages
Article (Journal)
English
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Steel arches and steel props for underground support
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