EE WAS DRIVING AWAY FROM QUARRY PAD AFTER UNLOADING SALT. HE SAID HE WAS NEAR THE BLACKTOP PLANTWHEN HE REACHED TO HIS RT. TO TURN ON WIPERS. HEDROVE OVER A BUMP PUSHING HIM INTO THE STEERING WHEEL. HE HIT HIS LOWER RT. RIB WHICH KNOCKED THE WIND OUT OF HIM. HE WAS NOT WEARING HIS SEAT BELT.