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2. Heyl & Patterson Inc. - Wikipedia

   en.wikipedia.org/wiki/Heyl_&_Patterson_Inc.

   Heyl & Patterson was founded by Edmund W. Heyl and William J. Patterson [1] in Downtown Pittsburgh, initially as a sales agency for elevator and conveyor chains and elevator buckets. This developed into supplying complete elevators and conveyors. Because it was located in the Coal Region of southwestern Pennsylvania, it was only natural to ...

3. American Institute of Steel Construction - Wikipedia

   en.wikipedia.org/wiki/American_Institute_of...

   The National Steel Fabricators Association (1919-1921) War Service Committee (1917-1919) The American Institute of Steel Construction ( AISC ) is a not-for-profit technical institute and trade association for the use of structural steel in the construction industry of the United States.

4. U.S. Steel - Wikipedia

   en.wikipedia.org/wiki/U.S._Steel

   Website. ussteel.com. United States Steel Corporation, more commonly known as U.S. Steel, is an American integrated steel producer headquartered in Pittsburgh, Pennsylvania, with production operations primarily in the United States of America and in Central Europe. The company produces and sells steel products, including flat-rolled and tubular ...

5. Commercial Metals Company - Wikipedia

   en.wikipedia.org/wiki/Commercial_Metals_Company

   Commercial Metals Company (CMC), headquartered in Irving, Texas, is a producer of rebar and related products for the construction industry. Along with Nucor, it is one of two primary suppliers of steel used to reinforce concrete in buildings, bridges, roads, and infrastructure in the U.S. The company also owns Tensar, a producer of foundation ...

6. List of steel producers - Wikipedia

   en.wikipedia.org/wiki/List_of_steel_producers

   Lackawanna Steel Company (acquired by Bethlehem Steel in 1922, plants closed in 1982) Laiwu Steel (merged into Shandong Iron and Steel Group) Lone Star Steel Company (acquired by U.S. Steel in 2007) Maanshan Iron & Steel (acquired by China Baowu in 2019) Mittal Steel Company (merged with Arcelor forming ArcelorMittal)

7. American Bridge Company - Wikipedia

   en.wikipedia.org/wiki/American_Bridge_Company

   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 ...