Mining Structures and Excavation ProjectsHistoric photographs of mining shafts, excavation sites, and water conduits, revealing infrastructure involved in mineral extraction. Sudbury Department, Sudbury Dam, trench for overfall, Southborough, Mass., 1894 , waterworks, dams, construction sites 248 assets in this story6145-528971206145-437794346145-299156536145-528968316145-528972086145-546008626145-531860544443-211717676145-559314476145-506272186145-442310106145-486429306145-531292176145-431621446145-528953516145-590624586145-519518966145-488732476176-660868716145-437963664048-76376145-589259444443-218691846145-546878766145-546874686145-485903916145-528949226145-487098246145-543551806145-437794396145-590206526145-546875356145-519633946145-485902006145-427761826145-505293536145-528947256145-527403856145-486363031746-300206584409-630151476145-589259136145-431634486145-505853476145-546878986145-484609066145-546873556145-54688015 PREVIOUS of 3 NEXT