In Rockton, Illinois, a massive fire at a chemical plant is continuing to burn for a second day amid warnings of an unfolding environmental catastrophe. The Chemtool chemical plant northwest of Chicago erupted in flames Monday morning, billowing thick, black smoke and prompting a mandatory evacuation order for all residents within one mile of the site. People within a three-mile radius have been ordered to wear masks to avoid respiratory irritation. Rockton’s fire chief said firefighters would allow the blaze to continue to burn for days in order to prevent hazardous runoff into the nearby Rock River.