Fire officials in Rockton, roughly 95 miles northwest of Chicago, say they will let the blaze burn out itself over concerns about chemical runoff into a nearby river.
A low level of hydrogen cyanide was found around the Chemtool plant that went up in massive flames on Monday, and the structure may continue to burn for a week. CBS 2's Brandon Merano reports.
A blanket of foam coating covered what was left of a chemical plant in Rockton, Illinois on Tuesday – a day after a massive fire broke out. CBS 2's Brandon Merano reports.