U.S. Steel plans to invest up to $2.5 billion into upgrades to its Mon Valley Works, which it forecasts will generate $1.7 billion for the state, according to a Monday report from the steelmaking giant.
The economic impact is expected to include the combined dollars spent on things such as wages and construction costs associated with the upgrades, according to the report.
The investment will preserve the roughly 3,000 jobs at Mon Valley Works and create nearly 3,200 indirect and induced jobs over a three-year period, according to the report. The company projects the upgrade work will generate up to $58 million in state and local tax revenues over the next three years. It comes as a part of the company’s larger commitment to invest $11 billion into its domestic footprint by 2028, on the heels of a $15 billion acquisition by Japan-based Nippon Steel last year.
The investment includes a new hot strip mill at the Edgar Thomson plant in Braddock. The new mill will replace an 87-year-old hot strip mill at the nearby Irvin plant in West Mifflin, and will allow U.S. Steel to produce products for the automotive industry and other high-strength steels that the Mon Valley Works “cannot competitively produce,” according to materials the company has shared with community leaders.
“The Mon Valley Works is where the American steel industry was first forged, and this investment is proof that its best days are still ahead,” the company’s President and Chief Executive Officer David Burritt said in a statement.
After debuting the $11 billion plan in November, U.S Steel hasn’t fully laid out how it intends to divvy up the investment across its domestic footprint. It originally pledged to invest $1 billion into the Mon Valley Works.
The upgrades will implement new technology that the company says will reduce its emissions and produce a “cleaner, more efficient production process.” The push toward a less emissions-intensive steelmaking process comes as Allegheny County is working on its climate action plan that urges U.S. Steel to phase out its current processes in favor of carbon capture and direct reduced iron technology.
Philadelphia-based consulting firm Parker Strategy Group created Monday’s economic impact report.
U.S. Steel’s Mon Valley Works is made up of three sites: the Edgar Thomson plant in Braddock, the Clairton Coke Works and the Irvin plant in West Mifflin.
None of the $2.5 billion is indicated as slated for the Irvin works or the Clairton plant, which was rocked by a fatal explosion last year. Two workers died and 10 more were injured in the blast.
U.S. Steel was fined $118,000 in the aftermath of the explosion. The federal Occupational Safety and Health Administration cited the plant for inadequate safety procedures, training and equipment.
Calls for clean investments in the Mon Valley
Increasingly, U.S. Steel and other manufacturers are looking South to produce more steel for the automotive industry. The company’s holdings in Arkansas and Alabama are non-unionized and sit close to the Southern automotive corridor — a network of manufacturing hubs stretching from South Carolina to Mississippi.
The company plans to invest $3 billion into its Big River Steel site in Arkansas. Of that, $1.9 billion will go toward a direct reduced iron plant — a steelmaking process that produces high-quality iron by removing oxygen from iron ore pellets using reduced gasses, such as hydrogen or natural gas, rather than melting it in a blast furnace. That iron is a key ingredient in steel.
An Lewis, executive director of the Steel Rivers Council of Governments — a resource-sharing nonprofit membership organization for Mon Valley communities — said at a June Steel Rivers board meeting that the communities “need to be thinking about what it is we can do in our communities to help U.S. Steel want to stay here.”
“If they don’t build here, what are we going to be left with?” Lewis said.
Nippon Steel has pledged to become carbon neutral by 2050. Direct reduced iron facilities, like the planned Arkansas plant, are typically less carbon intensive than other iron-making methods. Big River also utilizes electric-arc furnaces, which melt recycled scrap steel, producing fewer emissions than the traditional blast furnaces such as those at Edgar Thomson.
The company met with officials in the Mon Valley last week to discuss the investment, according to Lewis.
Together, the Mon Valley Works produce around one-quarter of Allegheny County’s greenhouse gasses, according to the county’s in-progress climate action plan.
The developing plan is expected to be finalized by the end of August. It also urges the company to invest in a new strip mill at the Irvin plant and invest in carbon capture technology for any remaining emissions.
Last week U.S. Steel continued its yearslong legal appeal of more than $4 million in fines issued by the Allegheny County Health Department for alleged hydrogen sulfide air quality violations between 2020 and 2023. The company agreed to a $1.5 million class action settlement in 2025, which compensated residents within one mile of Edgar Thomson over odors and other emissions from the facility. U.S. Steel denied allegations made against it as a part of the settlement.
Lucas Dufalla is the Southern Communities reporter at Pittsburgh’s Public Source and can be reached at lucas@publicsource.org.
Oliver Morrison contributed to this report.
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