Trump to unveil $15 billion Iowa steel mill; its 7.5 million tons would land in an industry running at 78% of capacity

President Trump is set to announce on Monday a plan by Minnesota-based Mesabi Metallics to build a $15 billion steel mill in Iowa, a White House official told Reuters, in a report carried by KSL. The Wall Street Journal first reported the project, and the Des Moines Register and Bloomberg also reported the announcement.

According to the White House official, the first phase would make 7.5 million tons of steel a year, rising eventually to 10 million tons, which the White House called the largest steel plant in U.S. history. The mill would be supplied with iron ore from Mesabi's Minnesota mine, which recently opened as the state's first new iron ore mine in 50 years. The official put the mine at a $2.5 billion investment with about 350 jobs, and the Iowa plant at 1,750 or more permanent jobs plus 5,000 to 6,000 construction jobs in the first phase. No construction timeline was given in the reports we read.

The number behind the number: idle capacity

The American Iron and Steel Institute's weekly report gives the context the announcement leaves out. In the week ending Sept. 19, U.S. mills produced 1,785,000 net tons of raw steel at a capability utilization rate of 77.9%. Year to date, utilization has averaged 79.0% on output of 68.3 million net tons, up 5.3% from a year earlier.

The capability figure is our calculation from AISI's weekly output and utilization rate, and the White House did not say whether its tonnage is in net or metric tons, so the shares are approximate. The point stands either way: the U.S. is not short of steelmaking capacity today. Mills are choosing to run at under 80%. A new plant of this size would compete for the same orders unless demand grows to meet it, which is the bet built into the project.

Who it actually hits

Contractors and fabricators buying structural steel, rebar and sheet will not see any effect on price for years; a mill of this size is not built in one construction season, and none of the reports gave a start-up date.

141,913 independent construction and contractors are listed on CheckThisBiz, a directory of 7,704,724 independent US businesses, including 12,896 in TX, 12,642 in CA, 11,414 in FL. Chains and franchises are excluded from that count, so these are the owner-operated businesses that actually apply for funding.

Eastern Iowa's trades are the near-term story. Five to six thousand construction jobs in a single project would pull on the local supply of electricians, pipefitters, concrete crews and equipment operators, which can push up labor costs for smaller firms bidding other work in the same area.

Existing steelmakers get a new competitor in the Midwest, where AISI counts 275,000 net tons of weekly output today.

What to watch

The White House event for financing details, a timeline and the plant's exact site, and AISI's weekly utilization rate, which is the cleanest read on whether U.S. steel demand is growing into the capacity being announced. The announcement also comes weeks before the November midterm elections, Reuters noted.

Sources: Reuters via KSL; WSJ; American Iron and Steel Institute. Capacity and cost-per-ton figures are our calculations. This is market information, not investment advice.