PORTAGE, Ind.—Indiana Dunes National Park closed its beaches and a northwest Indiana water utility shut down an intake facility after an orange substance apparently spilled from a U.S. Steel plant into a Lake Michigan tributary, a mayor said.
Portage Mayor Sue Lynch said she began receiving calls about 5:50 p.m. Sunday reporting that an unknown substance had appeared in the water near the outfall of the U.S. Steel Midwest plant in Portage and then traveled toward Lake Michigan along the Burns Waterway, about 30 miles east of Chicago.
