Between the dates the state shall, upon vouchers approved by the director of environmental management and out of the appropriation provided for by § 2-11-11, pay fully, at the rate of the existing minimum wage per hour as set by the minimum wage law, all persons not resident of the city or town or fire district where they are employed by the director in fighting a forest fire and pay, at a rate prescribed by the director for all equipment and supplies coming from outside the city or town or fire district where they are to be used and authorized by the director in fighting forest fires but all other expenses shall be paid as provided in § 2-11-6. The expense of the authorized representatives of the director shall be paid out of the appropriation authorized by § 2-11-11.