053-3 Wyo. Code R. § 3-2
(a) Any company operating an underground mine may request in writing a variance from the State Mining Council authorizing an exception to the statutory requirement of W.S. § 30-2-308 which requires a certified underground mine foreman to remain underground when a person is present underground.
(b) A company operating more than one underground mine is required to submit a separate variance request for each mine for which the company wants a variance.
(c) The company requesting a variance shall post a copy of its variance request on bulletin boards, referred to in W.S. § 30-2-209(b) (iii), at the mine where the variance would apply. The copy of the variance request must be posted on the bulletin boards on or before the date that the variance request is submitted to the State Mining Council.
053-3 Wyo. Code R. § 3-2