KENNEDY SPACE CENTER, FLA. - Adm. Harold Gehman, center, chairman of the Columbia Investigation Accident Board, looks at a large piece of Columbia debris in the RLV Hangar. He and other board members are visiting the Hangar as part of the ongoing investigation. To the right of Gehman are U.S. Rep

Credit lineKENNEDY SPACE CENTER, FLA. - Adm. Harold Gehman, center, chairman of the Columbia Investigation Accident Board, looks at a large piece of Columbia debris in the RLV Hangar. He and other board members are visiting the Hangar as part of the ongoing investigation. To the right of Gehman are U.S. Representatives Tom Feeney and Dave Weldon. 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.. NASA/KSC, 2003-05-15. Public domain. ID: KSC-03pd1623.