Editing Union Iron Works (section)

{{Short description|San Francisco American shipyard company}}
[[Image:Aerial view of the Union Iron Works, San Francisco, California (USA), circa in 1918 (NH 42535).jpg|thumb|right|Union Iron Works in 1918, at Pier 70]]

'''Union Iron Works''', located in [[San Francisco, California]], on the southeast waterfront, was a central business within the large industrial zone of [[Potrero Point]], for four decades at the end of the nineteenth and beginning of the twentieth centuries.<ref>{{Cite web|url=https://www.nps.gov/places/union-iron-works-powerhouse.htm|title=Union Iron Works Powerhouse (U.S. National Park Service)|website=www.nps.gov}}</ref>