West by Southwest to Stickney

Chapter 2 Photos, 28–54

(photos 1–27 here and 55–82 here)

Chicago River and South Branch

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Lake Claremont Press: A Chicago Joint

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Photo 2.50

March 19, 1937, the mixing plan for the west cofferdam. A concrete mixing plant has been installed in each cofferdam. The crane is used to load aggregate, sand, and Portland cement into the hoppers on top of the mixing plant and to distribute each batch of concrete from the mixing machine at the bottom for placement in the lock gate structure. (MWRD photo 22859)