MEMPHIS, Tenn. (AP) — An oil refinery worker exposed to propane and acid at a Valero plant in Memphis died on Monday, officials said.

He was the second Valero worker to die this year from an on-the-job injury. A man died from injuries suffered in a March fire at the refinery, which has been cited for violations related to the safe handling and control of hazardous energy and chemicals, officials said.