China is building the world’s highest unmanned mine at a forbidding altitude of 5,600 metres (18,372 feet), higher than the world’s highest known inhabited settlement. At the Huoshaoyun lead-zinc mine in Hotan county, Xinjiang, domestically developed unmanned mining trucks have successfully completed ore loading and transport testing, according to the state-owned Science and Technology Daily. These machines can operate round the clock, eliminating the risk to workers of exposure to the…
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