  The JASMIN Collaboration has studied the production of radionuclides by muons
in the muon alcoves of the NuMI beamline at Fermilab. Samples of aluminum and
copper are exposed to the muon field and counted on HpGe detectors when removed
to determine their content of radioactive isotopes. We compare the results to
MARS simulations and discuss the radiological implications for neutrino
factories and muon colliders.
