Building the Canal to Save Chicago

Chapter 5 Photos, 1–23

(photos 24–45 here)

Rock Section

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Everything Goes Media

Lake Claremont Press

Lake Claremont Press: A Chicago Joint

S. Woodhouse Books

BC-Photo 5.8

Rock excavation of the Main Channel in Section 11 on September 25, 1894. After the channeling machine cuts are made on each wall, holes are drilled in the rock and dynamite is inserted in each hole as shown here on the upper level. After the blast, the loose rock is removed from the lower level and placed in hoppers. The hoppers are lifted by overhead hoists and transported to the spoil piles shown in the left background. The rock is excavated in layers or lifts as shown here up to a total depth