Whenever any working place approaches within two hundred (200) feet of abandoned workings that cannot be inspected, boreholes shall be kept as required by rule of the inspector. The rules shall include spacing and other drilling requirements for the bore holes.
Wyo. Stat. Ann. § 30-3-117
Abandoned workings; precautions required when working place approaches
Official source: Wyoming Legislature. Reproduced from public-domain Wyoming statutes; confirm against the official source for the current text. Not legal advice.