HANGING WELDING CABLE TO WELD IN CAP ON CASING. 1300 FT OF CASING FELL THROUGH HOLE TO BOTTOM. PIPE BROKE WHEN IT WAS BEING LOWERED. CHUNK OF PIPE SRUCK INSIDE LEFT FOOT KNOCKING TO GROUND. WH ILE CRAWLING OUT OF WAY, A PIECE OF DEBRIS HIT IAT POINT OF IMPACT IT SPUN HIM AROUND AND HE CONTINUED TO CRAWL OUT OF THE WAY.