美国公众,特别是在西部各州的公众,已认识到矿山废石场和尾矿库是过去采矿作业的遗迹。很多人已发觉某些河流正在遭受从矿井排出的酸性水(AMD)的污染。此外,公众对于有毒物质和可能的诱癌因素具有强烈的畏惧感。其后果是,人们不仅对一般采矿,尤其对用于重金属堆摊浸滤法的氰化物的使用而担 The American public, especially in the western states, has recognized that mines and tailings mines are the remains of past mining operations. Many people have found that some rivers are suffering from the discharge of acidic water (AMD) from the mine. In addition, the public has a strong fear of toxic substances and possible cancer-inducing factors. The consequence is that people are not only responsible for the use of general mining, especially cyanide for heavy metal heap leaching