"39 explosions for the purpose of geological exploration (trying to find new natural gas deposits by studying seismic waves produced by small nuclear explosions

"39 explosions for the purpose of geological exploration (trying to find new natural gas deposits by studying seismic waves produced by small nuclear explosions)" (As well as several other interesting tests/uses) http://en.wikipedia.org/wiki/Nuclear_Explosions_for_the_National_Economy http://en.wikipedia.org/wiki/Nuclear_Explosions_for_the_Nati...