Acid mine drainage (AMD) and acid rock drainage (ARD) are problems that will be with us for a long time. Acid mine drainage is water with pH in the range of 1-3 that drains from abandoned mine sites. Acid rock drainage is acidic drainage or runoff from disturbed rock or soil that could be caused by road construction or other excavation work. Acid rock drainage can also result when affected rock is used as fill material.
Acid mine drainage and acid rock drainage is a rampant problem in the world today. The above photo depicts acid drainage at an abandoned mine in the Yukon Territory of northwest Canada. This mine shares a similar history to thousands of other mines throughout the world. It was in operation for six short years in the 1950s, producing gold ore. Its profitability eventually failed and it was abandoned. In the years following, the mine changed ownership several times, making it very difficult for the government to enforce treatment for the acid rock drainage that the mine created.
Category: Acid Mine Drainage Treatment