WEST READING, Pa. (AP) — Federal safety investigators are examining a natural gas pipeline for fractures and other damage as they gather evidence on the cause of last week’s deadly explosion at a Pennsylvania chocolate factory, a spokesperson said Wednesday.
The National Transportation Safety Board opened a probe into Friday’s blast at R.M. Palmer Co. that killed seven people, wounded several others and leveled the building in West Reading, a small town about 50 miles (80 kilometers) northwest of Philadelphia. The agency has called it a natural gas explosion and fire.
“NTSB is continuing to gather evidence about how the building was supplied with natural gas and point of ignition, interview witnesses, examine the pipeline for fractures, any damage to pipeline, a chronology of events leading up to the explosion, among other issues that may come up as the investigation continues,” agency spokesperson Keith Holloway said by email.
A preliminary report on the explosion could be available in about three weeks, whereas the final report could take up to two years, he said. Pennsylvania State Police are also investigating the cause.