Carrie Furnace is a derelict structure which exists across the Monongahela river from Munhall and Homestead, Pa. It had formed a part of the Homestead Steel Works. The Carrie Furnaces were built in 1908 and they operated until 1978. All that is left of the site are furnaces #6 and #7, along with the hot metal bridge.
The site on which it stands may be developed into a historic parklet with Carrie Furnace forming an attraction. A national architectural competition will be held in 2007 to design a museum for the park site dedicated to the memory of steel in Pittsburgh.
In November of 2006, the Carrie Furnaces won designation as a National Historic Landmark thanks in part to US Representative Mike Doyle(PA-14).
Wikipedia article:
http://en.wikipedia.org/wiki/Carrie_FurnaceCategory:
steel mill iron