Timbering of south heading of tunnel during construction, Waterworks Park, Detroit water supply system
Grab
Description
View of timbering 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. 91. Date: 3-30-31. Photo by Manning Brothers." Typed on back: "14-ft. tunnel south heading. View of timbering in last 18 ft. of tunnel at screen chamber and complete tunnel joining this section. Concrete forms still in place. Note copper water stop."