Three Chemicals & Mining directors resign By: MarketMinute.com Stock News March 18, 2015 at 13:59 PM EDT Three board members of Chemical & Mining Co. of Chile Inc. (NYSE: SQM) resigned amidst a campaign finance scandal. The stock price plunged $5.05 to $17.05. Related Stocks: Sociedad Quimica Y Minera DE Chile ADR R