[drlevy88]

If digging down to the magma is ever an option, using a nuke would be asking for big trouble, because guess what would spew first.

[Ronaldus Magnus]

The concept of nuclear demolition has been around for quite some time. Furthermore, nuclear cascade reactions can be very clean if done correctly. Finally, even the dirtiest nuclear explosion would be far safer than the apocalyptic scenario outlined in the article.