Check this one out.
http://www.nist.gov/public_affairs/newsfromnist_DNAinterview.htm
Due to the nature of the World Trade Center disaster, it quickly became evident that traditional methods for performing DNA typing were not likely to be fully successful in identifying all of the recovered remains. Traditional DNA ID methods depend on the presence of long, intact segments of DNA in order to accurately type the sample. The DNA in many of the samples recovered in this situation were so fragmented that these standard methods were ineffective.
In early November 2001, Dr. Robert Shaler, the director of the WTC DNA identification effort, contacted me and asked if I would be willing to develop some new DNA tests to help in the identification effort. I agreed to fast track our research efforts over the next several months and produce some test materials for his laboratory to try by January 2002.