@researchbridge: Acid mine drainage is a worldwide environmental issue. When sulphide-containing rocks from mining are exposed to air and water, they can produce acidic drainage. This water may mobilise toxic metals and contaminate rivers, groundwater and soil. The pollution can continue for decades even after a mine has closed. Mining may stop, but acid mine drainage can remain. #AcidMineDrainage #WaterPollution #MiningPollution #EnvironmentalScience #WaterQuality