The amalgamation method was initiated at the beginning of the Qin and Han dynasties in China, and it is a major contribution of the Chinese alchemists to the world. Our alchemists were early adopters of amalgamation to extract gold and silver, the law later descendant of Western countries. Mercury

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The basic principle of treating mine fires is to prevent and focus on prevention. 1. General measures for mine fire prevention (1) Supporting wellbore with non-combustible materials Downhole yards, main roadways and diverticularies, in the event of a fire, pose a great threat to the entire mine.

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