Acid Mine Drainage (AMD)
nounPronunciation: /ˈæsɪd maɪn ˈdreɪnɪdʒ/
The natural oxidation of sulfide minerals exposed during mining that produces sulfuric acid and mobilizes heavy metals in water. This acidic, metal-laden runoff requires treatment before environmental release.
Plain English
Acidic water containing dissolved metals that forms naturally when mining exposes certain minerals to air and water.
Etymology & History
Usage
"The remediation team installed treatment systems to neutralize acid mine drainage from the abandoned copper mine."
Style guide notes: Use acronym AMD after first full reference in technical documents.
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Related Terms
Frequently Asked Questions
What causes acid mine drainage at abandoned mines?
Exposure of sulfide minerals to oxygen and water during mining creates sulfuric acid and mobilizes heavy metals.
How is acid mine drainage treated during reclamation?
Treatment uses neutralization with alkaline materials, precipitation systems, and constructed wetlands to remove metals.
Why Test Candidates on This?
Fundamental concept tested in mine reclamation licensing and environmental compliance certifications.
Required skill level: Junior