If anyone's interested here's a paper written on black hole production in colliders. Looking at the lower right hand graph on page 2, it's quite clear this type of black hole, if produced, is completely harmless.
http://www.slac.stanford.edu/econf/C010630/papers/P321.PDF
Yeah..
Quite clear to YOU, maybe..
Me, I'm packin' clean underwear, just in case..
Just like my momma taught me..