Steel, as you know, is perhaps the most recycled metal on the planet, and in the United States the vast majority of stuff being milled is already made from scrap melted down in mini mills. Across the world, the end-of-life recycling rate—the proportion of scrap that goes on to be reused—is somewhere between 70 per cent and 90 per cent. For aluminium the rate is 42–70 per cent; for cobalt 68 per cent; for copper 43–53 per cent. For lithium it is less than 1 per cent.[5]
