Assessing the adequacy of the global land-based mine development
However, in 2019, more than 80% of the global cobalt supply came from mines where the contribution of cobalt to total sales revenue of the operation was more than 10%. Especially for many sediment-hosted copper-cobalt deposits in the DRC, cobalt should be considered a major product, or at least a co-product, rather than a by-product.
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