Terry,
… good to see someone is fact-checking. The damage could be inflated several orders of magnitude with other assumptions, but clearly a gram of this isotope is not as scary as first imagined … about the same energy as plutonium it seems… yet still a milligram of it is not something you want to zap with a laser in the basement lab. From: Terry Blanton At 10^18 eV/J that's only about 10^10 J or about 2.4 tons of TNT.
