Raw steel production in the country's Great Lakes region rose to 673,000 tons in the week that ended Saturday, according to an American Iron and Steel Institute estimate.
Production increased by about 37,000 tons, or about 5.8 percent, from the week prior. 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 569,000 tons, up from 560,000 tons a week earlier.
Total domestic raw steel production last week was about 1.77 million tons, up from 1.73 million tons a week earlier.
U.S. steel mills had a capacity utilization rate of 74 percent last week, up from 72.3 percent a week earlier. The capacity utilization rate had been 71.7 percent at the same time last year.
So far this year, domestic steel producers have had a capacity utilization rate of 76.9 percent, which is up from 75.2 percent during the same period in 2012.
Domestic mills have produced an estimated 95.8 million tons of steel this year, down 1.4 percent from the same period last year. The mills had made about 97.2 million tons of steel by Dec. 28, 2012.
Steel imports fell by 16.7 percent to 2.58 million tons in November, according to the American Iron and Steel Institute.
So far this year, the country has imported 29.6 million tons of steel, which is down 4 percent from last year. Imports have about 22 percent of the market share for finished products in the United States.