- Who'sGoldfield?-AbrilliantLithuanianpsychiatrist.Afterseveralbigfinds,GoldfieldwasforawhileAmerica'ssecond-largestproducer.TheResearchaboutthePollutionMechanismofHeavyMetalsinRiversoftheGoldfieldofShaanxiTong'guan;Goldfieldwasaleadinggoldmininghub...
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