I seriously considered writing an Administrative Law final exam question based on these facts, so I was delighted to see the publication of Eric E. Johnson's article, The Black Hole Case: The Injunction Against the End of the World, 76 Tenn. L. Rev. 819 (2009).
There's a handy summary at Technology Review: Blogs: arXiv blog: The Case of the Collider and the Great Black Hole.
Don't forget to check the RSS feed: Has the Large Hadron Collider destroyed the earth yet?
Category: Law: Everything Else. And I do mean Everything.