Chicago : Engineering and Contracting Pub. Co. · leaf 416
es and served by 8 four-horse dump wagons to each machine, on allthe work performed by them, which amountedto 767,000 cu. yds. On account of the hillbeing so close to the river bank between Sta-tions 196-222, the greater part of the materialwould have had to be handled twice withArmstrong… … Fig. 6. 21-ft. elevator, using an extra heavy or giantrailroad plow for loosening the material andthrowing it on the elevator. This plow wasattached to one side of the frame of grader.The only portion of the canal completely ex-cavated to grade by these machines was fromStations 10-20 to 145-163,…
Buildings
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