An industrial city shines its lights brightly.
The Jones and Laughlin Steel Corporation was one of the largest iron and steel manufacturers in the United States during the 19th and 20th centuries. By 1894, Jones and Laughlin was completely out of the iron business and produced only steel. By the mid-20th century, Jones and Laughlin was one of the largest steel producing companies in the world. It played a vital role in the defense industry during World War II. By the 1980s, as the steel industry moved away from Pittsburgh, Jones & Laughlin's vast plants along both sides of the Monongahela River near downtown Pittsburgh were been closed.