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Кадамжай Кадамджай Сурьмяный комбинат Ферганская долина
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Workers at the rotary kilns in Khaidarkan often do not wear any respiratory protection. This is of concern to worker health because the kilns are not well-sealed and so may emit high levels of mercury vapour to the atmosphere. The poor seals can also allow hazardous liquids to leak onto the flor of the smelter building. The exhaust gases from the condenser are vented through a chimney, and it is important to ensure their temperature does not exceed 30C to prevent mercury escaping. It was estimated that over the last
few years the kombinat emitted about 3.5 tonnes of mercury annually. The mercury levels and other contaminants in slag, sludge (waste from the kilns) and tailings (waste which has been treated with
  chemicals but not heated) are high enough to pose a risk to local people and the environment.
In its working life the Khaidarkan mine is estimated to have produced more than 36,000* tonnes of mercury. Mercury production was understandably modest in 1941, at under 100 tonnes, and peaked in the late 1980s at almost 800 tonnes.In 2008, Kyrgyzstan produced less than 300 tonnes.

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*Apart from Khaidarkan, historically there were two other mercury mining sites in the region, Chonkoy and Chauvay, which produced 9,000 tonnes of mercury before closing in the early 1990s.

 

 

 

 

 

 

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