Hi, Don Jose de LM-

You are correct, sir. Reactor #3 was 6% fueled with MOX. It includes weapons-grade Plutonium-239. Nasty stuff indeed. Plutonium oxide is more finely divided than talcum powder, so it's really important not to allow those fuel rods to catch on fire (oxidize) and release extremely fine particles to the wind. That explains why so much attention is being paid by TEPCO and now the Japanese military to cooling reactor #3's core, especially in light of the difficulties (no water, fuel rods on fire) with the spent fuel rod cooling pool at reactor #4.

Oh, and the first detection of fission by-products from the accident in Japan were detected this afternoon in Sacramento, California. Miniscule amounts, nothing to worry about, say the experts (from afar).

But none of this should concern you, sir, given your propensity to bathe in mercury :-)