All the comments are positive, yet the voting is in the negative, hmm.
Here are two journalistic reports on the paper mentioned above which show that it is good science...
Part 1: April 2009 Chemistry Report about Nano-Thermitic Material Discovered in 9/11 World Trade Center Dust... http://www.earthfiles.com/news.php?ID=1555&category=Science
Scientists Find Explosives in World Trade Center Dust http://rockcreekfreepress.tumblr.com/post/98195547/scientists-find-explosives-in-world-trade-center-dust
Here are two journalistic reports on the paper mentioned above which show that it is good science...
Part 1: April 2009 Chemistry Report about Nano-Thermitic Material Discovered in 9/11 World Trade Center Dust... http://www.earthfiles.com/news.php?ID=1555&category=Science
Scientists Find Explosives in World Trade Center Dust http://rockcreekfreepress.tumblr.com/post/98195547/scientists-find-explosives-in-world-trade-center-dust