Getting rid of the evidence of the WTC demolitions overrode the search for human remains. Some firefighters didn't like it at all.
9 11 Aftermath Firefighters Upset Over Changes In Recovery 11-2-2001 NBC
9 11 Aftermath Firefighters Protest in New York 11-2-2001 CBS
9/11 Firefighters 1st Responders Witnessed Accounts of WTC Explosions