A blast in rural Tennessee that leveled an explosives plant and was felt for miles around killed 16 people and left no survivors, authorities said.

Authorities have found no survivors after an explosion at a munitions factory in rural Tennessee on Friday, Humphreys County Sheriff Chris Davis told a press conference on Saturday.

The explosion Friday morning at Accurate Energetic Systems, which supplies and researches explosives for the military, scattered debris over at least a half-mile (800-meter) area and was felt by resid...