DURING ROUTINE CAGE PAKTOR CHANGE OR MAINTENANCE THE OPERATOR IN CHARGE AND A HELPER WERE ASSIGNED TO WORK AREA. THE HELPER WAS REMOVING OR DISCONNECTING THE CRANE HOOK FROM THE CAGE LIFTING T OOL. THE OPERATOR ACCIDENTALLY LOWERED THE CRANE CAUSING THE HELPER TO GET PINCHED BETWEEN THUMB AND INDEX FINGER. HELPER PUT BANDAID ON HIS HAND AND WENT HOME FOR THE EVENING.