Abandoned Mine Reclamation Glossary
743 terms total — 4 showing — Last updated 26 Oct 2026
Closure Financial Assurance
A regulatory mechanism requiring mining operators to establish monetary reserves or financial instruments sufficient to fund complete reclamation and long-term site management. The assurance amount is calculated based on detailed closure cost estimates and is held in escrow or bonded accounts.
Abandoned Mine Portal Sealing
The structural closure and safety isolation of mine entrances using engineered barriers such as bulkheads, fill, or rein...
Mine portal sealing
The installation of permanent or semi-permanent barriers at underground mine entrances to prevent unauthorized access, e...
portal sealing
The permanent closure of mine entrances using engineered barriers to prevent unauthorized access and environmental conta...
Portal sealing and stabilization
The structural reinforcement and closure of mine entrance openings to prevent unauthorized access, surface subsidence, a...