Chemist Kevin Ryan, another co-author, had reported in an earlier article that explosive nano-thermite, which may be painted onto surfaces, was developed by US government scientists at Lawrence Livermore National Laboratories.8
A United States Department of Defense special publication confirms that work on these "energetic materials" has long been "performed in laboratories within all military services."9
According to a June 2009 statement by Britain's prestigious Institute of Nanotechnology,10 the Harrit study "provides indisputable evidence that a highly engineered explosive called nano-thermite was found in the dust of all three buildings that came down on 9/11 2001 in New York city. [sic] This advanced explosive incorporating nanotechnology is only available to sophisticated military labs."11
It thus became known by mid-2009 that explosives of military origin, probably in the United States, had been involved in the World Trade Center collapses.
Early Coverage of the Nano-thermite Finding in the European Mainstream Press
Although the new scientific evidence against the official story of 9/11 was not reported in the mainstream British or North American media, it did receive attention in continental Europe.
The day the article was published, a thorough essay in the Danish journal Videnskab (Science) examined both sides of the controversy about controlled demolition.12
The same issue of Videnskab also carried an interview with Professor Harrit, who answered pointed questions about the peer-review history of the article, and the military nature of nano-thermite.13