Throughout its history, Pittsburgh has been known for a lot of things. The city was host to George Washington on multiple occasions, the departure point of Lewis and Clark on their famous expedition, home to America's early glass industry, and the world's leading supplier of iron and steel- and that is before even getting to the 20th century.
Although these are all incredible in their own right, it is the steel industry in Pittsburgh that made the city famous the world over.
In its prime, Pittsburgh was producing thousands of tons of steel per day- more than half of the entire output of all factories in the United States combined- and boasted a staggering number of mills located along the city's rivers. But by the 1980s this all changed- the steel industry went bust, nearly all of the factories were shut down, and Pittsburgh went through one of the largest depressions from which it only recently emerged.
Since then, most of the factories have been demolished and replaced with new industries. But a small portion of one massive factory, the iron-producing Carrie Furnaces, was rescued by the Rivers of Steel Heritage Foundation and turned into a historical site for future generations to come and learn about how the Steel City got its name.
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