EE STATED THAT HE WAS INSTALLING A 4'RESIN ROOF BOLT IN THE ROOF. THE BOLT BENT AND HE WAS IN THE PROCESS OF REMOVING IT FROM THE HOLE WHEN HE ACCIDENTLY HIT THE ROTATION LEVER ON THE ROOF BO LTER. HE FELT PAIN IN HIS RT. WRIST AND THUMB. NOTE: RESULTS OF MRI WERE NOT ONTAINED UNTIL 07/15/03 TO CONFIRM INJURY.