The J & L Steel Mill, formerly Jones & Laughlin Steel, was a titan of Pittsburgh’s industrial age, tracing its roots to 1852 (as American Iron Works) and formally adopting the Jones & Laughlin name in 1861. By the late 19th century, it had shifted fully from iron to steel production, and over the decades, expanded along both banks of the Monongahela River in Pittsburgh, linked by the Hot Metal Bridge, which transported molten iron between blast furnaces and open-hearth facilities.
At its peak, J & L competed as the region’s major independent steelmaker, employing tens of thousands and fueling the economic might of Pittsburgh.
- Collections: Cory Bonnet