bh016913 Workers pouring concrete in forms for dock wall, Waterworks Park, Detroit water supply system
bh016914 Concrete being poured underwater in forms for dock wall, Waterworks Park, Detroit water supply system
bh016916 Construction of suction chamber for centrifugal pumps, Waterworks Park, Detroit water supply system
bh016919 Construction of suction chamber for centrifugal pumps, Waterworks Park, Detroit water supply system
bh016923 Base ring, lower spider and air brakes of pump motor, Waterworks Park, Detroit water supply system
bh016930 Drag excavator, excavation for high and low plants, Springwells Station, Detroit water supply system
bh016931 Drag excavator, excavation for high and low plants, Springwells Station, Detroit water supply system
