AFTER SPOTTING TO POSITION A RAILCAR, THE EMPLOYEE WAS WALKING BACK TO THE PICKUP TRUCK. AS HE STEPPED OVER THE RAIL TRACK HIS TOE CAUGHT ON THE RAIL AND HE FELL FACE FIRST INTO THE REAR WHEEL WELL OF THE PICKUP. UNABLE TO CATCH HIMSELF HIS ARM HIT THE WHEEL WHELL AND HIS FACE HIT THE HUB OF THE TIRE.