  The Neutrinos at the Main Injector (NuMI) facility at Fermilab is due to
begin operations in late 2004. NuMI will deliver an intense muon neutrino beam
of variable energy 2-20 GeV directed into the Earth at 58 mrad for short (~1
km) and long (~700-900 km) baseline experiments. Several aspects of the design
are reviewed, as are potential upgrade requirements to the facility in the
event a Proton Driver is built at Fermilab to enhance the neutrino flux.
