DIRT ABOVE TOP OF HIGHWALL BROKE LOOSE AND FELL ON AUGER. THERE WERE SOME ROCKS MIXED IN WITH THE DIRT THAT DAMAGED AUGER. SMALL ROCKS BROKE THE PLEXIGLASS ON TOP OF THE CAB OF THE AUGER AND H IT THE OPERATOR ON THE HAND CUTTING HIS HAND AND HIT HIS KNEE AND CAUSED A BRUISE. THE INJURED MAN HAD 3 STITCHES PUT IN HIS HAND AND X-RAYS OF HIS HAND AND KNEE.