HAUL TRUCK DRIVER WAS TRAVELING UP THE EXHAUST TO THE GRIZZLY. AT THE INTERSECTION AT THE WEST RAMP EE HIT SOME POT HOLES IN THE ROADWAY CAUSING EE's HARDHAT TO FALL OFF EE's HEAD AND BOUNCING EE's HEAD OFF THE ROOF OF THE HAUL TRUCK. THIS RESULTED IN THE OPERATOR RECEIVING A MINOR CUT TO EE's HEAD.