. The street railway review . MALLINl. CUAL LARS \;\ K I. RCT K IC I T 1 . mine haulage has a history strikinglj- similar to that ofstreet railway traction. First the mule, then the cable,then electricity. A plant installed at the Rock Springs(Wyoming) Coal Mine has the station one mile from theshaft. The voltage used is 550 and the current is carriedto the shaft with 10 per cent loss. The motor used is60-horse-power and it hauls ordinarily about thirty carsweighing 3,000 pounds apiece. The saving in time overthe old method is no small factor in the economy of thenew. The exjiert gives some pa
. The street railway review . MALLINl. CUAL LARS \;\ K I. RCT K IC I T 1 . mine haulage has a history strikinglj- similar to that ofstreet railway traction. First the mule, then the cable,then electricity. A plant installed at the Rock Springs(Wyoming) Coal Mine has the station one mile from theshaft. The voltage used is 550 and the current is carriedto the shaft with 10 per cent loss. The motor used is60-horse-power and it hauls ordinarily about thirty carsweighing 3,000 pounds apiece. The saving in time overthe old method is no small factor in the economy of thenew. The exjiert gives some particulars in regard toshocks received from the trolley wire, which will be ofinterest, because the potential is the same as that used onoutdoor railway lines. He says: -Several men havebeen shocked since our plant has begun operating, butthe effect is only momentary and the men laugh at result has simply been to remove all fear they hadof it. * * * This is a very dry mine and so the only NEW WHEELS ON CURVES. IN speaki
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Keywords: ., book, bookcentury1800, bookdecade1890, booksubjectstreetrailroads
