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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.
Companies consolidated into American Bridge Company; Company name Headquarters 1 Keystone Bridge Company: Pittsburgh, Pennsylvania: 2 Wrought Iron Bridge Company: Canton, Ohio
American Bridge Company was founded in April 1900, when J.P. Morgan & Co. led a consolidation of 28 of the largest U.S. steel fabricators and constructors. [2] The company's roots extend to the late 1860s, when one of the consolidated firms, Keystone Bridge Company , built the Eads Bridge at St. Louis , the first steel bridge over the ...
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.
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 ...
This page was last edited on 19 September 2024, at 00:59 (UTC).; Text is available under the Creative Commons Attribution-ShareAlike 4.0 License; additional terms may apply.
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 ...
The Mon Valley Works–Irvin Plant is a steel processing plant operated by U.S. Steel and historically a "hot strip mill" (sometimes referred to as a "steel mill") in the Pittsburgh suburb of West Mifflin, Pennsylvania. The site consists of 650 acres on a hilltop 250 feet above the Monongahela Valley. [1]
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