The collider-black-hole prediction is conditional on the TeV-gravity premise: single-graviton emission scales as sigma(E) ~ (n+2)^2 E^n / M_I^(n+2), negligible below M_I but abrupt at E ~ M_I; above M_I graviton emission is analogous to Hawking radiation from an excited brane. This is one of the two foundational routes (with warped RS geometry) by which LHC black-hole production becomes kinematically conceivable at all.