  We argue that the secondaries produced in high energy hadron collisions are
emitted by small size sources distributed over a much larger area in impact
parameter space occupied by the interaction amplitude. That is, Bose-Einstein
correlation of two emitted identical particles should be described by a
`two-radii' parametrization ansatz. We discuss the expected energy, charged
multiplicity and transverse momentum of the pair (that is, $\sqrt{s},~N_{\rm
ch}, k_t$) behaviour of both the small and large size components.
