053-4 Wyo. Code R. § 75.1711
Current through April 27, 2019
[Statutory Provisions]
On or after March 30, 1970, the opening of any coal mine that is declared inactive by the operator, or is permanently closed, or abandoned for more than 90 days, shall be sealed by the operator in a manner prescribed by the Secretary and the State Mine Inspector. Openings of all other mines shall be adequately protected in a manner prescribed by the Secretary and the State Mine Inspector to prevent entrance by unauthorized persons.
053-4 Wyo. Code R. § 75.1711