Handbook of construction plant, its cost and efficiency (1918)
Dana, Richard Turner, 1876-1928 · New York, McGraw-Hill book company, inc., [etc., etc.] · leaf 149
ll done during very cold weather, in December andJanuary. The conveyor used on this contract was also employed by CONVEYORS 145 Messrs. Ryan and Parker for similar work in a great number ofplaces, its length being increased or diminished as desired byeasily made changes in the number of idlers and… … Fig. 68. in the mixer house, and run at a speed of 325 feet per minute.This engine also drove a 24-inch Robins Belt Conveyor whichcarried concrete from Smith mixers and discharged it through along chute to cars, which carried the concrete to all points wherefoundations and retaining walls were…
Contractors' operations · Building
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