A man was killed when a bomb he was making to blast tree stumps exploded in his garage.

John P. Whitesides, 21, was killed in the explosion Wednesday, and a friend, Peter Herbert Ewert, 20, Plain City, suffered knee scrapes.Ewert, Whitesides' wife, Michele, 18, and another woman were taken sobbing in an ambulance to McKay-Dee Hospital. The Whitesides were married Saturday.

Deputy Jeff Lasater said Ewert and Mrs. Whitesides told police White-sides was using a steel hammer to tamp gunpowder into a 9-inch piece of exhaust pipe.