Chicago : Engineering and Contracting Pub. Co. · leaf 241
p men 60S 10.48 1 hoist engineer 148 2.56 1 fireman 234 3.82 2 carpenters 220 3.89 4 maulers 192 3.30 1 watchman 112 . 1.93 1 steamfitter 14 0.24 1 steamfitter helper 26 0.4o Total for shaft in earth 2,936 :>0.60 2+ teams 396 7.00 The maulers were used during the few dayswhen the excavation was… … * Line of Tunnel1Excavot/on Fig. 3—Section of Tunnel Showing Arrange-ment of Drill Holes. catch the surface water seepage. A smallDean pump was all that was necessary forkeeping the shaft dry. The following figures show the tune re-quired for Concrete work ; Men-hrs. per Men ft, shaft Av. No. Men.…
Buildings
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