The Director may, upon the request of an operator or agent who employs a mine rescue team, designate two or more mine rescue teams as “state-designated mine rescue teams.” Any team that is certified as a mine rescue team by MSHA under 30 C.F.R. Part 49 shall be eligible to be a state-designated mine rescue team. Following the designation of any such teams, the Director shall, upon the payment to the Department of an annual fee set by the Director based on current costs for maintaining mine rescue stations and personnel, assign two or more state-designated mine rescue teams to the operator. An operator who has paid the rescue fee is entitled to the rescue services of a state-designated mine rescue team at no additional charge.