Electrical news and engineering . Placing concrete lining on rock sides of canal. Completed sections. 40feet in length, in foreground. when active excavation with the large shovels began. Ofcourse, a huge construction force was employed, at one timethere being 8,100 men on the payroll, although the averageforce was much smaller than this. This wonderful achievement was largely due to tlie typeof excavating equipment adopted. The economy of the largeshovels is illustrated by the fact that in 1917 when some pre-liminary work was commenced with railroad type shovels,direct labour cost comprised 2
Electrical news and engineering . Placing concrete lining on rock sides of canal. Completed sections. 40feet in length, in foreground. when active excavation with the large shovels began. Ofcourse, a huge construction force was employed, at one timethere being 8,100 men on the payroll, although the averageforce was much smaller than this. This wonderful achievement was largely due to tlie typeof excavating equipment adopted. The economy of the largeshovels is illustrated by the fact that in 1917 when some pre-liminary work was commenced with railroad type shovels,direct labour cost comprised 29 per cent of the total unit costof excavation, while in 1920, when labour was at its peak,costing 250 per cent more than in 1917, the labour cost peryard of excavation has only increased 4 per cent over the1917 figure of 29 per cent. This would indicate that the sav-ing of man pow^r resulting from the use of the large excavat-ing units practically offset the 250 percent increase in labourexpenditure. The rapidity of operations p
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Keywords: ., bo, bookcentury1800, bookdecade1890, bookidelectricalnewsen31donm
