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The Pittsburgh-Des Moines Steel Company (originally the Des Moines Bridge and Iron Company), and often referred to as Pitt-Des Moines Steel or PDM was an American steel fabrication company. It operated from 1892 until approximately 2002 when its assets were sold to other companies, including Chicago Bridge & Iron Company.
The 1868 bridge was a five-span wrought-iron lattice truss built for the Pittsburgh, Fort Wayne and Chicago Railway with two simple plate girder spans as approach roads at each end. In 1918 the bridge and associated approaches were raised (as were other neighboring bridges) to increase navigable headroom.
Hogan, William T. Economic History of the Iron and Steel Industry in the United States (5 vol 1971) monumental detail; Ingham, John N. The Iron Barons: A Social Analysis of an American Urban Elite, 1874-1965 (1978) Krass, Peter. Carnegie (2002). ISBN 0-471-38630-8. Livesay, Harold C. Andrew Carnegie and the Rise of Big Business, 2nd Edition (1999).
Companies consolidated into American Bridge Company; Company name Headquarters 1 Keystone Bridge Company: Pittsburgh, Pennsylvania: 2 Wrought Iron Bridge Company: Canton, Ohio
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. The enterprise began as the American Iron Company, founded in 1852 by Bernard Lauth and Benjamin Franklin Jones, about 2.5 mi (4.0 km) south of Pittsburgh along the Monongahela River ...
Wrought iron is a form of commercial iron containing less than 0.10% of carbon, less than 0.25% of impurities total of sulfur, phosphorus, silicon and manganese, and less than 2% slag by weight. [18] [19] Wrought iron is redshort or hot short if it contains sulfur in excess quantity. It has sufficient tenacity when cold, but cracks when bent or ...
Iron and steel scrap may be added to both the blast furnace and the basic iron furnace. US Steel operates a number of integrated steel mills, including the Gary Works in Gary, Indiana . They also operate the Edgar Thomson Works , which is the iron- and steel-making unit of the Mon Valley Works, which includes three other related plants.
Ampco-Pittsburgh Corporation (American Metal Products Company) is a specialty steel manufacturer headquartered in Downtown Pittsburgh, Pennsylvania. [3] It is one of several companies to bear the Ampco name, and it should not be confused with the Milwaukee-based copper base alloy producer, Ampco Metal Inc.; the Miami-based cabinetry company; the Swiss aluminum corporation; or the Dallas-based ...