Crane trimming slopes of back channel, Detroit water supply system
Grab
Description
View of crane trimming slopes of back channel for the Detroit water supply system. Printed on front: "City of Detroit. Department of Water Supply. Intake system for additional supply. Intake lagoon. Contract RC-9. Dunbar & Sullivan Dredging Co., contractors. Photo no. 71. Date: 6-25-31. Photo by Manning Brothers." Typed on back: "Trimming slopes of back channel."