A St. George man died Tuesday when the dump truck he was driving rolled off a steep canyon road.

Killed was:- Gary E. Miller, 57, St. George.

Driving a partially loaded dump truck belonging to Western Rock Co., Miller had just left Brian Head Resort and was traveling west on U-143 about 4:20 p.m. near Mile Post 12, the Utah Highway Patrol said.

An early investigation indicates that the brakes on the truck went out as Miller was driving near the Thunder Ridge Boy Scout Camp. He was not wearing a seat belt.