After centuries of global mining activity, ore deposits are continually decreasing in mineral grade. What would have been considered 'tailings' or discard from mines only a century ago, are in many cases considered high grade deposits today. In order to economically recover metals from these lower grade resources requires more and more earth to be moved, resulting in mining operations becoming larger and larger.
Not surprisingly, the more rare a metal (or any resource for that matter), the higher the value. We wanted to take a closer look at the connection between relative abundance in the Earth's crust and prices of metals.
Another interesting correlation is given the relative abundance of metals, compared to how much of each metal is recycled annually.
What other interesting insights do these correlations reveal?
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