TRESPASSER WAS RIDING A DIRT BIKE ON A COUNTY ROAD UNDER CONSTRUCTION IN A RECLAIMATION AREA. HE HIT HOLE AND LOST CONTROL OF HIS BIKE. HE FLAGGED EMPLOYEES DRIVING BY WHO CALLED FOR AN AMBULA NCE WHO CALLED FOR LIFEFLIGHT BECAUSE OF A POSSIBLE HEAD INJURY. HE HAD BEEN PREVIOUSLY WARNED NOT TO RIDE ACROSS MINE PROPERTY. HE WOULD RIDE AROUND GATES AND OVER BERMS ON CLOSED ROADS.