The Alpha II tracks were rectangular in shape as the
Calutrons located at the curved portions of the original oval race-track designs had proven difficult to regulate.
Many of the bulky
calutron pole magnets used to enrich uranium were produced in Austria by a state-owned firm that shipped the finished products to Iraq, half by truck through Turkey and the rest through Hamburg.
The idea of questioning Groves about the relative merits of
calutrons compared to gaseous diffusion compared to centrifuges I am sure never occurred to McKellar.
In 1991, in one of the first, and only, instances of finding prohibited equipment, inspectors came upon some massive
calutrons used for enriching uranium at an Iraqi military base.
