Raw steel production in the country's Great Lakes region was about 665,000 tons in the week ending June 15, according to an American Iron and Steel Institute estimate.
Production fell by 22,000 tons from the week prior, a drop of about 3.2 percent. Most of the raw steel production in the Great Lakes region takes place in Indiana and the Chicago area.
Production in the Southern District was estimated at 653,000 tons last week, up from 634,000 tons a week earlier.
Total domestic raw steel production last week was 1.87 million tons, up from 1.85 million tons the week prior.
U.S. steel mills had a capacity utilization rate of 78.1 percent last week, which is up from 77.3 percent a week earlier. The capacity utilization rate was 74.8 percent at the same time last year.
Domestic mills have produced an estimated 44.1 tons of steel this year, down 6.5 percent from the same period last year. Domestic mills had produced about 47.1 million tons of steel by June 15 in 2012.
Through the end of April, U.S. mills had shipped 31.5 million net tons of steel, a 6.3 percent decrease from the same period in 2012. Increases in shipments of cold rolled sheet and hot dipped galvanized sheets and strip contributed to a 0.7 percent overall increase in the amount of steel shipped in April, the most recent month for which data was available.