EMPLOYEE WAS CHANGING A BEARING & WHEN HE WAS SWINGING THE SLEDGE HAMMER, IT CAUGHT ON HIS UPPER LEG CAUSING THE HAMMER TO MISS THE BEARING & HIT HIS LT. HAND. HE WENT TO THE HOSPITAL & IT WAS DETERMINED THAT NOTHING WAS BROKEN BUT THE HAND DID HURT & WAS BRUISED & SWOLLEN.