 ... lamps. At Seaham, Tudhoe, West Stanley, and Usworth the explosions were simultaneous with the firing of shots in stone ; in these cases the explosions occurred when the pits were occupied by stonemen and repairers and at the only time when the operations...  Explosions in Coal Mines - Página 105por W. N. Atkinson, J. B. Atkinson - 1886 - 144 páginasVista completa - Acerca de este libro
 | W. N. Atkinson, J. B. Atkinson - 1886 - 214 páginas
...could only be coal dust and air, with a small percentage of fire-damp added in some parts. The Seaham, Tudhoe, West Stanley, and Usworth explosions were...were currents of air of 61,000, 23,000, and 26,000 cubic feet per minute. In one of these three cases the shot had been ignited by a naked flame. The... | |
 | Sir Norman Lockyer - 1887 - 974 páginas
...and repairers and at the only time when the operations of the mines allowed the firing of shots. At Seaham, Tudhoe, and Usworth the shots were fired on a main intake air-road and at points where currents of air of between 20,000 and 30,000 cubic feet per minute were... | |
 | Sir Norman Lockyer - 1887 - 670 páginas
...and repairers and at the only time when the operations of the mines allowed the firing of shots. At Seaham, Tudhoe, and Usworth the shots were fired on a main intake air-road and at points where currents of air of between 20,000 and 30,000 cubic feet per minute were... | |
| |
