http://www.iht.com/articles/ap/2006/10/23/america/NA_GEN_US_Attacks_Remains.php Bloomberg says it won't slow down construction efforts. A couple of women who lost their sons were on CNN recently and were really frustrated about remains being found by construction workers instead of people qualified in forensics. I felt sorry for them when they said they might have to go to Bush for help. .
In the weeks that followed 911, the firemen were very upset about the debris being moved quickly to the landfill sites along with whatever human remains were in the debris. After being stonewalled, there was a massive brawl between the firemen and the police, although it wasn't mentioned much in the news. The charges were dropped later for most of the firemen except one who punched a cop in the face. The frustration level of the relatives is very high. One has to wonder when a disgruntled relative will finally crack and do something everyone regrets. It's happened before with other events that people were frustrated about. .
Pity about that I can see why you feel sorry for the relatives - Bush's government is the people that murdered them at the WTC