The board of natural resources and the department of natural resources may employ such cruisers, drafters, engineers, architects, or other assistants as may be necessary for the best interests of the state in carrying out the provisions of RCW
79.24.010 through
79.24.085, and all expenses incurred by the board and department, and all claims against the capitol building construction account shall be audited by the department and presented in vouchers to the state treasurer, who shall draw a warrant therefor against the capitol building construction account as herein provided or out of any appropriation made for such purpose.