(a) Formal proceedings for a hearing before the board regarding action against a License, Permit, or Exception Authorization holder shall be commenced by petition and notice of hearing issued by the Board, served in person, or by both certified mail and first class mail sent to the address last known by the Board at least thirty (30) days prior to the date set for the hearing. The petition and notice shall contain at least:
(b) The License, Permit, or Exception Authorization holder shall file an Answer or Notice of Appearance, which must be received by the Board at least three (3) working days prior to the date set for hearing in the matter or the holder will be in default.
019-9 Wyo. Code R. § 9-9