Workers posing in tunnel during construction, Waterworks Park, Detroit water supply system
Description:
View of workers posing in tunnel during construction, Waterworks Park, Detroit water supply system. Printed on front: "City of Detroit. Department of Water Supply. Land tunnel and structures. Contract RC 12. Dravo Contracting Co., contractors. Photo no. 116. Date: 5-22-31. Photo by Manning Brothers." Typed on back: "11 ft. tunnel. Excavating the last 12 ft. adjacent to bellmouth of auxiliary low lift plant. Note holes in bulkhead for blasting. Ends of the two needle beams rest on bulkhead."