Carrie Blast Furnaces 6 and 7 This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Carrie_Blast_Furnaces_6_and_7".
Carrie Blast Furnaces Number 6 and 7, also known by the ungrammatical Carrie Blast Furnace Number 6 and 7, is the site of the only surviving pre-World War II blast furnaces in the Pittsburgh area.
The site was added to the National Register of Historic Places and declared a National Historic Landmark in 2006.1