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2004年4月4日· Artisanal and smallscale gold mining (ASGM) is one of the largest sources of mercury pollution in China This thesis outlines an approach to investigating ASGM in China based on a series ofPreliminary survey of artisanal and small scale gold mining (ASGM) in China in 2014 Case study in Lingbao, Henan province and Tongguan, Shaanxi province, by ChinesePreliminary survey of artisanal and small scale gold mining (ASGM)
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