East heading of tunnel, Springwells Station, Detroit water supply system
Grab
Description
View of east heading of tunnel, Springwells Station, Detroit water supply system. Printed on front: "Job - Springwells tunnel. Sec. 1. Photo no. 10. June 30, 1927. View east heading. 118 & 0. Showing method of timbering roof before concreting. Geo. R. Cooke, contractor."