* On June 6, 2017, five unfortunates at the Plutonium Fuel Research Facility in Ibaraki Prefecture happened to be “taking stock of a radioactive substance in an old container.” The container was stainless steel, inside of which lay 300 double-bagged grams of powdered uranium and plutonium oxides “used in past experiments.” In other words, the substance must have been MOX, or something like it. The worker on the spot had prepared himself as well as any Boy Scout: suited, gloved and masked. No immediate danger, colleagues! But as soon as he withdrew the six sealing bolts, out rushed black powder—the result, perhaps, of a buildup of helium from the plutonium’s radiodecay. “Although masks were covering the workers’ noses and mouths, radioactive material was detected inside the noses of three” of the men; “internal . . . exposure was detected in four” and “suspected” in the fifth. The employee who had opened the cylinder got “up to 22,000 becquerels . . . in his lungs,” or something like “360,000 becquerels overall . . . Under current labor standards,” which they may or may not have been obeying, “that translates into 1.2 sieverts a year, and perhaps 12 sieverts over 50 years . . .” The two figures in sieverts respectively translate into 136.986 microsieverts per hour (comparable to Okuma Town’s “more than 100” micros after the nuclear accident) and 27 microsieverts per hour—equivalent to certain gratings and drains I measured in Okuma and Tomioka. To make better sense of those numbers, see table of Comparative Measured Radiation Levels here. As for those five workers at the Plutonium Fuel Research Facility, well, why worry about a touch of prospective bone cancer?