Great post Quincey and find GMA. This truely another dimension that no one had any inkling about. It would not surprise me if the NRC-IRAP work helped this out, they would have good ties to the US government labs such as Oak Ridge National Laboratories. Btw ORNL is also the site for the developement of nuclear graphite and there are a number of studies carried out by ORNL on what properties are required for both synthetic and natural graphite.