South heading of tunnel during construction, Waterworks Park, Detroit water supply system
Description:
View of south heading of 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. 81. Date: 2-27-31. Photo by Manning Brothers." Typed on back: "South heading of 15-ft. 6-in. tunnel; looking southward at safety bulkhead at Sta. 37+55, behind which men may retreat in case trouble develops in going under the 6-ft intake pipe."