At the time, Mr David said that radiation from the uranium isotope had ruined his health and robbed him of the ability to earn a living.

BBC: NEWS | UK | England | Somerset | Uranium High Court battle resumes

The uranium in the cake is almost entirely the stable isotope uranium 238.

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What they failed to appreciate, and what the company failed to tell them, was that a fast-breeder uses fuel that has a 19% concentration of the fissile isotope of uranium, 235U. Ordinary nuclear reactors use fuel containing around 3% of the fissile isotope.

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Their work there was aimed at separating the light, fissile isotope of uranium (useful for making bombs and reactors), from its more abundant, but less useful, heavy cousin.

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Natural uranium is only 0.7% U-235, the isotope you actually want.

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If enacted in its current form, Section 621 of this year's Energy bill , by contrast, would allow foreign companies to receive U.S. HEU for use in medical isotope production without having to move toward a low-enriched uranium (LEU) target, even if it is technically feasible for them to do so.

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