Handbook of construction plant, its cost and efficiency (1914)
Dana, Richard Turner, 1876-1928 · Chicago, The M. C. Clark Publishing Co. · leaf 153
147 148 HANDBOOK OF CONSTRUCTION PLANT Hullett-McMyler Derrick. Fig. 71 illustrates this machine,which handles a skip weighing 2,400 lbs., making, with its fullload of 1% cubic yards of solid rock, 3% tons loaded. It weighs95 tons and costs $15,000. The cost of operation is practicallythe same as… … Fig. 71. Hulett-McMyler Derrick. A steel incline and tipple is often used to convey earth froma steam shovel to the top of a high bank where it is dumped.Sucn a machine is illustrated in Figs. 72, 72A. The steel truss ofthe incline weighs 8,500 lbs., and the total load of boilers, with-out cars,…
Contractors' operations · Building
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