The Coal and Coke Operator and Fuel Magazine
Loaded cars of dirt, having a nine-inch topping, were placed at 13-925, 134, 000 and E-1, 075 and in the 1, 250 cut-through, and wheels spragged and brakes set. ... Gun-cotton tufts were suspended from wires in the roof at intervals of 25 feet throughout the mine to measure the ... All electric current was cut-off from the mine during the inspection period. ... as well as the tin-foil flame circuit-breaker, was gone, but those on the wires at 13-275 and on station plates E-350 were not burned, anbsp;...
| Title | : | The Coal and Coke Operator and Fuel Magazine |
| Author | : | |
| Publisher | : | - 1913 |
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