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Smart coal mine: Higher efficiency, lower costs

chinadaily.com.cn | Updated: 2021-10-14 11:26
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The Caojiatan smart coal mine is seen in Northwest China's Shaanxi province on Oct 12, 2021. Large equipment here such as coal machines, hydraulic support, and transport systems can be operated via a smartphone, a move to improve efficiency and reduce costs. [Photo/Xinhua]
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