China owns 7 billion tons of coal waste rock — these toxic residues that contaminate groundwater and ignite spontaneously. A Shanxi plant has just demonstrated that they can be transformed into sand, gravel and building bricks. A solution that simultaneously solves two major environmental crises. What you will learn [...]
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China owns 7 billion tons of coal waste rock — these toxic residues that contaminate groundwater and ignite spontaneously. A Shanxi plant has just demonstrated that they can be transformed into sand, gravel and building bricks. A solution that simultaneously solves two major environmental crises. What you will learn [...]