An explosion inside a maintenance hole on the Texas Tech University campus in Lubbock set off fires and power outages.

“I heard an explosion and then saw a smoke ring, almost like a cartoon or something,” doctoral degree student Robert Gauthreaux III told KCBD-TV. “It traveled about 200 feet in the air.

“I heard an explosion and then saw a smoke ring, almost like a cartoon or something,” doctoral degree student Robert Gauthreaux III told KCBD-TV. “It traveled about 200 feet in the air.”Gauthreaux ...