Jonathan Moore, a 30-year-old truck driver, felt the blast from about 35 miles to 45 miles north in the town of Itasca. He said he heard a loud boom and saw the walls shake inside the truck-stop he was in at the time.
“All of a sudden I could see the walls move both ways,” Moore said in a telephone interview. As he and his friend drove closer to the explosion on Interstate 35, the smell became so strong their eyes started burning, he said.
The U.S. Chemical Safety Board, which investigates industrial chemical accidents, said on its website it deployed a “large investigation team” that should arrive today.