Handbook of construction plant, its cost and efficiency (1914)
Dana, Richard Turner, 1876-1928 · Chicago, The M. C. Clark Publishing Co. · leaf 657
oose gravel, anda 1%-in. for heavier material will unload a train of cars oftenin half the time taken by locomotives, since the cars need not beblocked, and the danger of breaking the cable is decreased. The cost of repairs to unloading plows on the Panama canalwork during the 6 months ending June… … Fig. 308. Bucyrus Left Hand Side Plow at Work on Erie Railroad. loading crushed stone from railroad cars into dump wagons. Bythe old method of shoveling, unloading crushed rock ordinarilycosts from 20 to 25 cents per ton, with California wages, butby means of this apparatus rock is being unloaded…
Contractors' operations · Building
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