The Houston Chronicle published the results of an Associated Press investigation that used public records to find hazardous chemicals stored in the U.S. "Around the country, hundreds of buildings like the one in West store some type of ammonium nitrate. They sit in quiet fields and by riverside docks, in business districts and around the corner from schools, hospitals and day care centers. By law, this shouldn’t be a mystery. Yet fears of terrorism have made it harder than ever for homeowners to find out what dangerous chemicals are hidden nearby. Poor communication can also keep rescue workers in the dark about the risks they face."