Mr. Richard Hudson, left, and Dr. David Gent, right, discuss the 1:1000 scale model of the Chicago Canal system in the HWRC "pit" area that is used to observe the potential corrosion-related effects of the electrical fish barriers in the canal and evaluate a mitigation approach for use in the canal.

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Photo by: USACE |  VIRIN: 140607-A-CE999-001.JPG