Abandoned Hardrock Mine

{
  "id": "MLC-T-ENV-000103",
  "term": "Abandoned Hardrock Mine",
  "field": "Environment",
  "definition": "Applies to non-coal mining environments where environmental hazards such as acid-mine drainage, heavy metal contamination, and threats to water quality and the environment are of concern. Hard rock minerals in this context, generally includes, but are not limited to gold, silver, copper, lead, zinc, magnesium, nickel, molybdenum, tungsten, uranium, and selected other minerals. A mine at which exploration, development, mining, reclamation, maintenance, and inspection of facilities and equipment, and other operations ceased as of January 1, 1981 (the effective date of BLM’s Surface Management regulations codified at 43 CFR 3809) with no evidence demonstrating that the miner intends to resume mining.",
  "references": [
    "DOI Bureau of Land Management Abandoned Mine Land Program Policy (Public): Glossary. http://www.blm.gov/pgdata/etc/medialib/blm/wo/Information_Resources_Management/policy/blm_handbook.Par.14160.File.dat/h3720-1.pdf"
  ],
  "url": "https://mlchart.com/terminology/environment/abandoned-hardrock-mine/"
}