. . "It was like an earthquake.The refinery employs about 170 people and can process about 70,000 barrels of crude oil a day, according to the Alon USA Web site.It supplies an area including West Texas, New Mexico, Arizona, southern Oklahoma and Arkansas with fuel products and asphalt, the Web site says.CNN affiliate KOSA-TV reported that Interstate 20, which passes the refinery, had been shut down.Re" . . . .