The Global Acid Rock Drainage (GARD) Guide is the industry standard for best practices in prediction, prevention, and management. 2. Acid Rock (Psychedelic Rock) Music

Depending on whether you are interested in the geological phenomenon or the musical genre, 1. Acid Rock Drainage (ARD) Management

Acid rock drainage is a natural process where sulfuric acid is produced when sulfide minerals (like pyrite) in rocks are exposed to air and water, often as a result of mining or large-scale excavation.