Section 176.060 - Refunding of bonds1. The revenue bonds issued pursuant to the provisions of sections 176.010 to 176.080 may be refunded, in whole or in part, in any of the following circumstances, to wit: (1) When any such bonds have by their terms become due and payable and there are not sufficient funds in the interest and sinking fund provided for their payment, to pay such bonds and the interest thereon.(2) When any such bonds are by their terms callable for payment and redemption in advance of their date of maturity and shall have been duly called for payment and redemption.(3) When any such bonds are voluntarily surrendered by the holder or holders thereof for exchange for refunding bonds.2. For the purpose of refunding any bonds issued hereunder, including refunding bonds, the governing body of any state educational institution may make and issue refunding bonds in such amount as may be necessary to pay off and redeem the bonds to be refunded together with unpaid and past due interest thereon and any premium which may be due under the terms of such bonds, together also with the cost of issuing such refunding bonds, and may sell the same in like manner as is herein provided for the sale of revenue bonds, and with the proceeds thereof pay off, redeem and cancel such old bonds and coupons as may have matured, or such bonds as may have been called for payment and redemption, together with the past due interest and the premium, if any, due thereon, or such bonds may be issued and delivered in exchange for a like par value amount of bonds to refund which the refunding bonds were issued; provided, however, that no refunding bonds issued pursuant to the provisions of sections 176.010 to 176.080 shall be payable in more than forty years from the date thereof or shall bear interest at a rate in excess of six percent per annum.3. Such refunding bonds shall be payable from the same sources as were pledged to the payment of the bonds refunded thereby and, in the discretion of the governing body, may be payable from any other sources which under sections 176.010 to 176.080 may be pledged to the payment of revenue bonds issued hereunder. Bonds of two or more issues of any state educational institution may be refunded by a single issue of refunding bonds.L. 1945 p. 1715 § 6, A.L. 1955 Ex. Sess. p. 30