ular kind of governmental activity is purely of local concern and therefore governed exclusively by the charter of a home-rule municipality or is controlled by general law. It has been held that in respect to the election of members of the board of education in home-rule municipalities of certain kinds, the state statute prevails over a provision in the charter, Searcy v. State, 64 Okla. 257, 167 P. 476; that the fixing of gas rates within a home-rule city is not a matter of such purely municipal concern that it is governed by the municipal charter to the exclusion of state law, City of Bartlesville v. Corporation Commission, 82 Okla. 160, 199 P. 396; that state law controls the rate of wages payable to laborers employed by a home-rule city, State v. Tibbetts, 21 Okla. Cr. 168, 205 P. 776; that the disposition of penalties on delinquent city taxes, including delinquent special assessments for local improvements, is controlled by state law, not a charter provision of the municipality, City of Stillwater v. Board of County Commissioners of Payne County, 105 Okla. 271, 232 P. 438; that the issuance, sale, and redemption of municipal bonds, and the procedure therefor, are not matters of purely municipal concern, but are of general interest to the state, and that in case of a conflict between general law and the charter of the city the latter must yield, City of Tulsa v. Dabney, 133 Okla. 54, 270 P. 1112; and that control over streets and ways of municipalities is reserved to the state, and that a municipality may not exercise control thereover which is in conflict with state law, Continental Casualty Co. v. Lolley, 193 Okla. 22, 140 P.2d 1014. And this court has held that a home-rule city in the granting of an ordinance for the maintenance of a telephone system must yield to a state statute in respect to the use of the streets in connection with the operation of the system, City of Tulsa v. Southwestern Bell Telephone Co., 10 Cir., 75 F.2d 343, certiorari denied 295 U.S. 744, 55 S.Ct. 656, 79 L.Ed. 1690.