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Black holes on a human scale are anything but black; a kilogram blackhole would burn for a tiny fraction of a second (10-17secs) at a an imaginable high temperature (10^23K) giving off a great amount of energy (10^17 joules).
As for the evaporation, isn't that still theory?
It should be emphasized that these pictures of the mechanism responsible for the thermal emission and area decrease are heuristic only and should not be taken too literally. It should not be thought unreasonable that a black hole, which is an excited state of the gravitational field, should decay quantum mechanically and that, because of quantum fluctuation of the metric, energy should be able to tunnel out of the potential well of a black hole. This particle creation is directly analogous to that caused by a deep potential well in flat space-time. The real justification of the thermal emission is the mathematical derivation given in Section (2) for the case of an uncharged non-rotating black hole.