CHANGING CAGE ON WHEEL CRUSHER. WHEN TO PULL LAST BOLT FROM HUB ON OLD WHEEL AND DID NOT HAVE CRANE ATTACHED TO TOP OF WHEEL TO IMMOBILIZE IT. WHEEL TURNED WHEN RELEASED AND PINCHED EE'S LOWE R LT. HAND BETWEEN WHEEL-CAGE AND HUB AND IMPACTSOCKET. CRUSHED LITTLE FINGER AND LOWER HAND.