Longview chemical tank was called unfit for service before deadly failure, investigators find

An inspection contractor found a chemical tank at a Washington state paper mill “not fit for continued service” 10 months before it failed in May, killing 11 in one of the deadliest U.S. workplace disasters in recent decades, according to a federal report released Friday.

The U.S. Chemical Safety Board’s update about the May 26 failure in Longview, which expelled enough caustic liquid to blow out building walls, is part of an ongoing investigation.