When Mark Twain referred to a mine as nothing but a hole in the ground with a liar standing next to it, he probably wasn’t imagining that those mines might be surrounded with solar panels as well.
And yet, 170 years later, demand for ‘clean’ copper could even surpass the Californian gold rush of the 1850s. The International Energy Agency predicts that annual copper demand for electricity grids will grow from 5 million tonnes in 2020 to 7.5
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