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A would-be name given to any black holes created by the hadron collider (if it were to open one). Named after Prof. L Graven who is a specialist in the physics field and a long-time admirer of Higgs (the man behind the idea of the hadron collider). A Graven is a black hole created by the hadron collider and should one come into existance it is predicted to have 10 x 10 to the power of +ve 34 gravitational pull and would draw in all objects closest to it.
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