Rivers of Steel 

Built in 1884 and operating for 98 years, the Carrie Blast Furnaces are remains of the massive US Steel Homestead Works in Pittsburgh where iron oxides were melted into liquid iron. You can still hear tremors in people's voices as they talk about the collapse of the steel industry here less than a generation ago. To honor the labor history of Pittsburgh, Breaking Ground was made free to union members and their families at this National Heritage Site. Steel workers and Teamsters showed up in droves; many had parents or grandparents work at this mill, but had never been inside it for themselves.