THE EE STARTED UP THE SPOIL RAMP IN #1969 TRUCK. WHEN HE WAS APPROX. 3/4 OF THE WAY OUT OF THE PIT THE ENGINE STALLED. WHEN THIS HAPPENED, THE TRUCK LOST ITS STEERING CAPABILITIES AND THE RETA RDER ALSO BECAME INOPERABLE THE TRUCK IS EQUIPPED WITH EMERGENCY STEERING. AS THE TRUCK DESCENDED BACKWARD DOWN THE RAMP, THE OPERATOR CALLED ON THE RADIO TO STAY OUT FROM BEHIND HIS TRUCK. T