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Mercury production

Producing mercury is a fairly simple process: cinnabar ore is brought to the surface, crushed and roasted in rotary furnaces. Metallic mercury separates from sulphur in this process and evaporates. Liquid mercury is collected from the vapour in a condensing column, purified and can then be transported, usually in iron flasks. But it may not always be quite as easy as it sounds. At Khaidarkan, for example, the working conditions can be arduous. Miners descend 400 metres underground in one of the two working shafts to reach the ore deposit, a journey which can involve a walk through knee-high, fast-flawing water.  





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