EMPLOYEE WAS OPERATING THE SKID STEER AND WAS MIXING MATERIAL IN THE BAY AREA OF THE ALPINE MILL. THE BUCKET ON THE SKID STEER WAS FULL OF MATERIAL AND TIPPED FORWARD CAUSING THE EMPLOYEE TO HIT EMPLOYEE'S HEAD ON THE INTERIOR OF THE SKID STEER. EMPLOYEE HAD A CONCUSSION AND CUT ON EMPLOYEE'S NOSE.