The technical term “supergrade” has had a pair of distinctly American meanings:
(a) A supergrade was the civilian equivalent of an Army general
(b) Supergrade is industry parlance for plutonium alloy bearing an exceptionally high fraction of Pu-239 (>95%), leaving a very low amount of Pu-240 which is a gamma emitter in addition to being a high spontaneous fission isotope
Author: Milan
In the spring of 2005, I graduated from the University of British Columbia with a degree in International Relations and a general focus in the area of environmental politics. Between 2005 and 2007 I completed an M.Phil in IR at Wadham College, Oxford. I worked for five years for the Canadian federal government, including completing the Accelerated Economist Training Program, and then completed a PhD in Political Science at the University of Toronto in 2023.
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