Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
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. (Autor:in)
Colliery Guardian ; 140
1930
5 pages
Aufsatz (Zeitschrift)
Englisch
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Steel arches and steel props for underground support
| Engineering Index Backfile | 1930
Steel arches and steel props for underground support
| Engineering Index Backfile | 1930
Steel pit props and mine arches
| Engineering Index Backfile | 1934
Steel pit props and mine arches
| Engineering Index Backfile | 1934
Repair of steel arches and pit props
| Engineering Index Backfile | 1931