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  1. Abandoned Mine Lands - U.S. Department of the Interior

  2. Abandoned Land Mines - U.S. Department of the Interior

  3. Mining buildings turned into a "sanctuary for human connection

  4. Abandoned Mine Land: Opportunities Exist to Improve Interior's

  5. Luxury Living Underground: Converting Abandoned Mines to …

  6. Legacy Pollution - U.S. Department of the Interior

  7. Shapiro Administration and U.S. Department of Interior Secretary …

  8. Abandoned Mine Lands - Bureau of Land Management

  9. Underground voids from abandoned mines pose danger to …