Duluth Treatment Plant
Duluth Treatment Plant https://www.southlandholdings.com/wp-content/uploads/Southland_Holdings_Stacked.png 1000 750 Southland Holdings https://www.southlandholdings.com/wp-content/uploads/Southland_Holdings_Stacked.pngCompleted in 1981 Project Details Owner: Western Lake Superior Sanitary District Location: Duluth, Minnesota, United States Performed as: Johnson Bros. Corporation Project value: $22,390,241.00 Completion Date: 1981
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