  Even if dark matter particles are unambiguously discovered in experiments,
there is no clear reason to expect that the dark matter problem has been
solved. It is very easy to provide examples of dark matter scenarios (e.g. in
supersymmetric models) where nearly identical detector signals correspond to
extremely different relic densities. Therefore, the density of the particles
discovered must be determined before their cosmological relevance is
established. In this talk, I will present a general method to estimate the
local density of dark matter particles using both dark matter and hadron
collider experimental data when it becomes available. These results were
obtained in collaboration with Gordon Kane at the University of Michigan.
