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Comment Re:Confused (Score 2, Informative) 196

Actually, black holes as small as you're describing would evaporate very quickly due to Hawking radiation. I suspect that any black hole up to the job of clearing out space debris would present serious dangers to the atmosphere, but I haven't done any calculations. Hand-waving justification: to effectively clear things, it would have to have enough mass to 'accelerate' (I know this term is incorrect from a strictly GR standpoint) objects toward it, in which case the tidal forces would be significant.

A rock store eventually closed down; they were taking too much for granite.