We recommend the Assistant Secretary for Mine Safety and Health verify all underground coal mines in abandoned status for more than 90 days are either sealed (and its status updated in MSHA’s system), in the process of sealing and are issued a violation for non-compliance with the regulation, or has a remark in MSHA’s system indicating why it will not be sealed. This may include verifying the mine was identified for future reclamation in the Abandoned Mine Lands program inventory.