Favorite this☆ bh016489 Goldbeck cells taking pressure readings, Waterworks Park, Detroit water supply system
Favorite this☆ bh016488 Workers posing in tunnel during construction, Waterworks Park, Detroit water supply system
Favorite this☆ bh016487 Men accompanying mayor of Detroit on inspection trip of river and land tunnels, Waterworks Park, Detroit water supply system
Favorite this☆ bh016486 University of Michigan civil engineering students in tunnel, Waterworks Park, Detroit water supply system
Favorite this☆ bh016481 Screen chamber during construction, Waterworks Park, Detroit water supply system
Favorite this☆ bh016480 North stop log shaft excavation, Waterworks Park, Detroit water supply system
Favorite this☆ bh016479 Screen chamber during construction, Waterworks Park, Detroit water supply system
Favorite this☆ bh016478 Screen chamber during construction, Waterworks Park, Detroit water supply system
Favorite this☆ bh016477 Screen chamber during construction, Waterworks Park, Detroit water supply system
Favorite this☆ bh016476 Screen chamber during construction, Waterworks Park, Detroit water supply system
Favorite this☆ bh016473 Screen chamber during construction, Waterworks Park, Detroit water supply system
