Britain Is Stuck With 139 Tons of Plutonium
The United Kingdom's last plutonium reprocessing plant, B205, located in Sellafield in northern England, will shut down by the end of 2020. It will bring an end to the era of plutonium separation in the country, which began 68 years ago. Because the United Kingdom never used any of the material it recouped from reprocessing except in nuclear weapons, today it has amassed a stockpile of almost 139 metric tons of separated plutonium.