On Monday 15th of September 2014 At approximately 10:40 pm Mr. Prapad Krumsang, fuel truck driver along with 2 fuel truck helper`s were travelling to A-2 pit in FT-06 to add fuel to EX #25 at level -7 RL area. While traveling down the ramp at level 5 RL the driver applied the foot brake and states that it did not work, he then continued to steer the fuel truck down the ramp then up an adjoining ramp to level -10 RL until the fuel truck came to a stop. The truck then began to roll backwards and the driver turned the fuel truck into the high wall, resulting in it butting up against the high wall bringing the truck to a complete stop with minor damage to the rear bumper. Once the truck had come to a stop the operator informed green box and the mining supervisor to attend.