Statuses
- Unconfirmed — source evidence supports underground eligibility, but UndergroundMines has not independently verified the record.
- User Verified — a member verification has been accepted.
- Multiple User Verified — multiple accepted member verifications.
- Admin Confirmed — confirmed by UndergroundMines staff review.
- Future external-source verification — reserved for later integrations (for example Mindat) when credentials and review rules exist.
How to contribute
If you already know a mine or can support it with reliable documentation, use Verify Mines or the Verify / Flag actions on a mine page. Do not visit unknown abandoned mines solely to verify listings.