Comment Re:2x power (Score 3, Insightful) 89
Even if you turned off Hawking radiation, it would still be hard for a black hole from a particle accelerator to actually eat the planet. Let's say you have an accelerator much more powerful than the LHC, with a center-of-mass energy of 1 PeV. If all that were used to produce a black hole, it would have a mass of 1.8e-21 kg. An electron or proton a single hydrogen radius away from it (which we can use as a typical intermolecular distance in the Earth for simplicity) would feel an acceleration of 1e-11 m/s^2, which is absolutely tiny compared to the electrical forces that govern motion on those scales. A small black hole like that behaves much like a neutrino - it hardly interacts with anything. And it needs to do that to grow. I think we could have lots of these inside the Earth and not even notice (dun-dun-DUUN!).
There is an even easier answer to address the fears about LHC micro-black holes. Particles with energies comparable or exceeding LHC energies hit the atmosphere of earth every day, and we observe their effects with Cosmic-ray observatories such as Cerenkov Detectors. Business as usual, and nothing exciting happened for the last billion years.