Chart showing estimated reserves of elements
September 9, 2016 2:36 PM Subscribe
Some years ago (about 4–6 years, if I had to guess), I came across an infographic that showed various estimates for the reserves of various elements/ores that are known to exist. So, for example, we have (made-up numbers follow) 100 years' worth of lead, 50 years of yttrium, 400 years of copper, etc. The various elements were shown in a sort of circular bar chart, with elements having greater reserves extending further from the center. Can anyone help me track this chart down?