The 600 NYPD and 55 FBI repsonse teams might sort of disagree with you. Are they all lying and breaking the law when they claim to have investigated all the materials coming to the storage areas?
What about NYPD Detective first grade Hal Sherman who says:
"At Ground Zero the CSU is responsible for photographing the site, recovering physical evidence, documenting body parts and any other physical evidence like weapons or a wallet, manning the temporary morgue at the site (as well as the city morgue up on 28th Street), inspecting debris that leaves the site, and inspecting debris as it gets sifted out at Staten Island. ...All evidence is documented– airplane parts were essential to the beginning investigation, but now they look for hair, fibers, glass particles, semen, ballistics. ...We ID every part. Pillars and beams are swiped for hair, tissue and blood, evaporated body evidence. We have two police officers with mortuary degrees, and they are either in the medical examiner's office or the police lab, because you must be a sworn police officer to take evidence.
Is he lying or are you wrong?