EE WAS REMOVING CAP FROM 8"" METAL PIPE THAT EXTENDED TO THE SURFACE AND A 6"" DRISCO PIPE WAS BEING INSTALLED FROM THE SURFACE WHEN A WELD BROKE ALLOWING IT TO FALL TO THE BOTTOM. APPROX. 26' C AME OUT OF THE HOLE AND A PORTION OF WHICH STRUCK EE ON THE LEFT LEG. THIS RESULTED IN A FRACTURE TO HIS LEG.