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 - (discussion) p 200-220; Colliery Guardian, vol. 140, nos. 3614, 3615 and 3616, Apr. 4, 1930, pp. 1279-1283, Apr. 11, pp. 1376-1380 and (discussion), Apr. 18, pp. 1465-1467, 21 figs., also discussions in nos. 3621 and 3622, May 23, 1930, pp. 1949-1950 and May 30, pp. 2032-2034; 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 - (discussion) p 200-220; Colliery Guardian, vol. 140, nos. 3614, 3615 and 3616, Apr. 4, 1930, pp. 1279-1283, Apr. 11, pp. 1376-1380 and (discussion), Apr. 18, pp. 1465-1467, 21 figs., also discussions in nos. 3621 and 3622, May 23, 1930, pp. 1949-1950 and May 30, pp. 2032-2034; 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
S. Wales Inst. Engrs. -- Proc
James, R. (author)
1930
56 pages
Article (Journal)
English
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Steel arches and steel props for underground support
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