The governing body, subject to the limitations set forth herein, shall have the power to levy a tax not to exceed three mills on the dollar in any one year upon the assessed value of all taxable property within the municipality, except intangible property, for a term not to exceed 10 years in addition to the amount of tax which may be annually levied for the purposes of the adopted budget statement of the municipality, for the purpose of establishing a sinking fund for the construction, purchase, improvement, extension, or repair of the approved uses as authorized by state law. To initiate the sinking fund, the governing body shall declare its purpose by resolution to submit to the qualified electors of the municipality the proposition to provide the improvement at the next general municipal election. The resolution shall set forth the improvement, the estimated cost, the amount of the annual levy, the number of years required to provide the required revenue, the name of the sinking fund proposed, and the proposition as it will appear on the ballot. Notice of the proposition shall be published in its entirety three times on successive weeks before the day of the election in a legal newspaper of general circulation in the municipality. The sinking fund may be established after the election if a majority or more of the legal votes were in favor of the establishment of the fund. The governing body may then proceed to establish the fund in conformity with the provisions of the proposition, and applicable state law. The funds received by the Municipal Treasurer shall, as they accumulate, be immediately invested with the written approval of the governing body in the manner provided by state law. No sinking fund so established shall be used for any purpose or purposes contrary to the purpose as it appeared on the ballot unless the governing body is authorized to do so by 60% of the qualified electors of the municipality voting at a general election favoring such a change in the use of the sinking fund. (Neb. RS 19-1301 through 19-1304, 77-2337, 77-2339)