Texas oil refinery explosion sends smoke into air, residents advised to shelter in place

Residents of a Texas city were urged to shelter in place following an explosion and fire at a Valero oil refinery that sent massive plumes of smoke billowing into the air. 

The incident happened Monday at Valero’s Port Arthur Refinery, which is located about 90 miles east of Houston and processes around 435,000 barrels per day. The company says about 770 employees work at the site, but there were no injuries, according to Port Arthur Mayor Charlotte Moses. 

"There's been an explosion...