EMPLOYEE WAS SPLITTING STONE WITH A HAMMER & CHISEL. HE FELT PAIN IN HIS MIDDLE FINGER OF HIS RT. HAND. THINKING THE PAIN WOULD GO AWAY, HE DID NOT IMMEDIATELY REPORT IT. A HARD BALL FORMED UNDERNEATH THE SKIN. PRESCRIBED 800 MG. OF IBUPROFIN. RELEASED TO FULL DUTY BUT REFERRED TO AN ORTHOPEDIC SPECIALIST FOR POSSIBLE SURGERY.