Last year, an explosion at U.S. Steel's Clairton Coke Works outside Pittsburgh killed two U.S. Steel workers and injured 11 others, including contractors.

Attorneys representing victims of the Dec. 23 nursing home explosion say the NTSB initial accident report raises more questions than answers.

A gas explosion and fire at a home near Hayward and Interstate Highway 238 on Thursday morning injured multiple people and destroyed or damaged at least three structures, authorities said. The ...