WHILE LIFTING BUCKETS ON 2/10/02 THE INJURED THOUGHT HE MAY HAVE PULLED SOMETHING IN HIS ABDOMEN BUT HAD NO ADDITIONAL PROBLEMS UNTIL 2/16/02. WHILE PULLING HARD ON A PIPE WRENCH AS HE WAS WO RKING TO REPAIR AN AIR LINE, THE INJURED FELT A SHARP PAIN IN HIS ABDOMEN. HE SUFFERED A HERNIA THAT WAS REPAIRED SURGICALLY ON THE 19TH OF FEBRUARY.