Harold Gehman and Representative Tom Feeney are shown the model of the leading edge of Columbia's left wing.

In the RLV Hangar, (from left) Adm. Harold Gehman, chairman of the Columbia Investigation Accident Board, and U.S. Representative Tom Feeney are shown the model of the leading edge of Columbia’s left wing where pieces of debris are being placed. Gehman and the board are visiting KSC as part of the ongoing investigation. Recovery efforts as of May 5 included 82,500 pieces of debris weighing 84,800 pounds, almost 40 percent of the total dry weight of the shuttle. About 25,000 personnel took part, utilizing almost 1.5 million total man-hours in the recovery effort and involving more than 130 federal, state and local agencies. The operation was also supported by more than 270 organizations that included businesses and volunteer groups.