Comment by rini17

The crucial link "International Energy Agency (IEA)" is dead, probably it's this: https://www.iea.org/reports/the-role-of-critical-minerals-in...

I did not dig deeper but I suspect it's again comparing tonnage of _refined_ metals with _unrefined_ crude fossilies. That's what usually these bombastic analyses do and I did not yet receive rational answer why such methodoogy was chosen. Considering that average coper ore grade is 0.6% and declining....