Carrie Blast Furnace
Visiting this Pittsburgh, Pennsylvania's National Historic Landmark in 2019 and again in 2025, we can see how time has had its effect on the site. In 2019, I was able to gain access to more of the integrated workings of the furnaces, now, much of it is cut off from visitor inspection due to its dangerous and deteriorated conditions. Images shown here are from both visits. From their Website: Towering 92 feet over the Monongahela River, constructed of 2.5″ thick steel plate and lined with refractory brick, Carrie Furnaces #6 and #7 are extremely rare examples of pre-World War II iron-making technology. Since the collapse of the region’s big steel industry in the 1970s and 1980s, these are the only non-operative blast furnaces in the region that remain.
