Mon Valley Works–Irvin Plant

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] The plant has an annual capacity of 2.9 million net tons of steel from an 80" Hot Strip Mill, 64” and 84" Pickle lines, 84" 5-Stand Cold reduction mill, Continuous annealing line, Batch and open-coil annealing facilities, 84" Temper mill, 52" Hot-dip galvanizing line and a 48" Hot-dip galvanizing line, as well as the #11 Shear Line and #17 Recoil line.[2]

History
President Obama visits the Irvin Plant in January 2014

The mill was announced on May 22, 1937 and opened in phases starting on March 2, 1938 while being dedicated on December 15, 1938[3] for U.S. Steel and was constructed by Mesta Machinery. U.S. Steel has claimed that construction of the hilltop site required more cubic yards of earth moved (4.4 million cubic yards) than any project other than the Panama Canal.[1] The cost of the construction of the facility was estimated at $63 million ($1.14 billion today).[4] It produced its 80 millionth ton of steel in 1981 with a workforce of 4,000 that year.[1]

In 1943 a Pittsburgh grand jury indicted 4 Carnegie Illinois foremen for destroying records of steel plating tests conducted at Irvin.[5]

Texas Governor Rick Perry made a major televised campaign stop at the plant in October 2011.[6]

In January 2012 a large explosion and fire rocked the plant.[7]

President Barack Obama visited the plant in January 2014 to launch his program on new retirement accounts, signing the myRA at a televised ceremony at the plant.[8][9][10]

In May 2019 U.S. Steel announced a project to spend $1 Billion dollars to build a combined casting and rolling facility. (The first of its kind at any American steel mill.) As part of this project, U.S. Steel is also building a cogeneration power facility. The two facilities are expected to be running by 2022.

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References
  1. William H. Wylie (April 10, 1981). "U.S. Steel Salutes Irvin Mill For 80 Million Tons Of Reasons". The Pittsburgh Press. p. B-8.
  2. Steel Irvin Plant
  3. "An Aerial View of New Irvin Works North of Clairton". The Pittsburgh Press. November 21, 1938. p. 5.
  5. "Steel Company Indicted for Hiding Records". The Pittsburgh Press. May 28, 1943. p. 1.
  6. "Archived copy". Archived from the original on 2014-02-18. Retrieved 2014-01-30.CS1 maint: archived copy as title (link)
  7. EndPlay (15 January 2012). "Crews Battle Large Fire At U.S. Steel Mon Valley Works' Irvin..."
  8. "President: Speech in Pennsylvania". C-SPAN.org.
  9. "Pittsburgh PA News, Weather and Sports - WTAE-TV Pittsburgh Action News 4". WTAE. Archived from the original on 2014-02-02. Retrieved 2014-01-30.
  10. "Press Gaggle by Press Secretary Jay Carney and Treasury Secretary Jack Lew Aboard AF1 en route Pittsburgh, PA". 29 January 2014.


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