bh016769 Basement floor slab, footings and walls for office and service building, Waterworks Park, Detroit water supply system
bh016770 Workers installing drain pipe for office and service building, Waterworks Park, Detroit water supply system
bh016771 Workers building forms and placing reinforcing steel in pipe tunnel, Waterworks Park, Detroit water supply system
bh016772 Fiber duct bank for office and service building, Waterworks Park, Detroit water supply system
bh016773 Underground steam and condensate return lines for office and service building, Waterworks Park, Detroit water supply system
bh016774 Underground steam and condensate return lines for office and service building, Waterworks Park, Detroit water supply system
bh016775 Workers installing drain pipes for office and service building, Waterworks Park, Detroit water supply system
bh016776 Workers finishing concrete floor slab for office and service building, Waterworks Park, Detroit water supply system
bh016777 Workers setting forms, reinforcing steel and electrical conduits in floor slab, Waterworks Park, Detroit water supply system
bh016749 Workers removing concrete transformer foundations, Waterworks Park, Detroit water supply system
bh016750 Reinforcing steel and forms ready for pouring of concrete encasement, Waterworks Park, Detroit water supply system
bh016787 Insulated ductwork over general office, office and service building, Waterworks Park, Detroit water supply system
bh016789 Workers installing forms and reinforcing steel for junction well no. 5, Waterworks Park, Detroit water supply system
