J & L Steel. The Jones and Laughlin Steel Corporation, also known as J & L Steel or simply as J & L, was an American steel and iron manufacturer that operated from 1852 until 1968.
   In art, J & L is associated with desolate landscapes with smokestacks and factories, and with depictions of working-class people involved in industrial labor. The enterprise began as the American Iron Company, founded in 1852 by Bernard Lauth and Benjamin Franklin Jones, about 2.5 mi south of Pittsburgh along the Monongahela River.
   Lauth's interest was bought in 1854 by James Laughlin. The first firm to bear the name of Jones and Laughlin was organized in 1861, and headquartered at Third & Ross in downtown Pittsburgh.
   Originally producing only iron, the enterprise began the production of steel in 1886. Over the ensuing 60 years, the company expanded its facilities and its operations along both sides of the Monongahela River on the South Side of Pittsburgh and along the Ohio River at Aliquippa.
   The Hot Metal Bridge across the Monongahela River was built to connect Eliza blast furnaces making pig iron on the Hazelwood side of the river with the open hearth steel furnaces on the south side of the river. In 1905, a new plant was begun at Aliquippa, Pennsylvania. The company also owned coal mines in western Pennsylvania in its early days, including some reached by an incline in Pittsburgh's South Side which connected
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