EE HAD GOTTEN OUT OF HIS PIT TRUCK (769D) TO MOVE A ROCK AFTER HE HAD DUMPED IN THE JAW. HE THEN WENT TO CLIMB BACK INTO THE TRUCK WHEN HE MISSED THE HADNDRAIL AND SLIPPED. HE FELL BACK AND LANDED ON HIS LEFT SIDE. HE WAS COMPLAINING ABOUT PAIN IN HIS LEFT LEG AROUND HIS THIGH. HE WAS THEN TRANSPORTED BY AMBULANCE TO UNC E.R.