CASE

Test1-Shanxi
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Test 2-Shanxi
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Test3-Yun Nan
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Test4-Yun Nan
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Test5-Guizhou
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Test6-Chongqing
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Test7-Yun Nan
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Test8-Qinghai
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Test9-Gold mine
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Test10-Tunnel in Vietnam
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Test11-Ghanaopen-pit mine
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