Carnegie Steel

Carnegie Steel was a major American steel company founded by Andrew Carnegie in the late 19th century. It revolutionized steel production by adopting efficient manufacturing techniques like the Bessemer process, allowing it to produce steel quickly and at lower costs. This enabled widespread building of bridges, railroads, and skyscrapers, fueling rapid industrial growth. Carnegie Steel became one of the largest and most successful steel producers in the world before being sold to what became U.S. Steel in 1901. Its innovations and scale significantly impacted the development of infrastructure and the American economy during the industrial era.