Not sure what they are up to.
I have two possible reasons... the obvious oil one mentioned in the link
or...
If as a recent link here suggested (can't find it now) the planet is actually cooling slightly if red hot magma were to be released underneath the ice it would possibly melt it and keep the global warming / pole caps melting theme going well.
Either way I'm sure it isn't for a good cause... Also I would suggest with the nuclear boring / tunnelling machines they've had since 1995 would have made getting them placed would not take long, as the post above suggests otherwise.
Phil Schneider 1995:
http://educate-yourself.org/products...edescrip.shtml
http://video.google.co.uk/videosearc...b=0&aq=-1&oq=#