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Rock-to-metal ratios of mined materials
The quantity of rock that has to be mined to produce one unit of metal. For example, a ratio of 50 means that 50 kilograms of rock has to be mined to produce one kilogram of that metal.
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Nassar et al. (2022); Wang et al. (2024)
Attribution: Nassar et al. (2022) and Wang et al. (2024)
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