FISH CREEK PORTAL BOTTOM, MAN WAS BESIDE SWIMMING POOL USED FOR DISCHARGED MINE WATER. HE HAD JUST FINISHED INSTALLING BLEEDER VALVE ON 4"" DISCHARGE LINE. THE 4"" PLASTIC PIPE BROKE APPROXIMATE LY 25 FEET AWAY. THE 4"" LINE SHIFTED AND STRUCK HIS HAND AGAINST POOL WALL.