Section 15-5-306 - Board powers and duties(a) The board has the power to compel witnesses to attend and testify before it upon all matters connected with the operation of this article in the same manner as provided by law for the taking of testimony in courts of record in this state. The chairman or any member of the board may administer oaths to witnesses.(b) The board may provide for the payment from the fund of all necessary expenses and printing not to exceed five percent (5%) of the annual revenue. However, no compensation or emolument may be paid to any member of the board for any duty required or performed under this article.(c) The board may make all necessary rules and regulations for its guidance in conformity with the provisions of this article.(d) Upon recommendation of the board the governing body of each city or town may hire a professional investment counselor or management firm to make recommendations on the investment of monies in the fund, which may be invested in any securities specified in W.S. 9-3-408(b). The cost of such counselor or firm shall be paid from the fund.(e) The board shall: (i) At least once in every six (6) year period cause an actuarial valuation of the accounts within the fund to be made;(ii) At least every two (2) years cause an actuarial investigation of all the experience under the accounts within the fund to be made;(iii) Pay out of funds which shall be provided by the cities or towns the cost of the valuations and investigations under paragraphs (i) and (ii) of this subsection;(iv) Reduce employee and employer contribution rates under W.S. 15-5-302(b), in an amount to be actuarially determined, if at any time the assets in the existing or new accounts of the fund exceed the liabilities in those accounts.