15% Russians, 3% Kazakhs, 2% Azerbaijanis, 10% others, including Lezgins, Armenians, Uzbeks, Tatars, and Jews. The Yomud tribe is associated with the Balkan region and the Yomud carpet göl (rosette) is one of the five rosettes represented on the Turkmen flag. Climate Balkanabat has a cold desert climate (BWk) according to the Köppen climate classification. Industry, economy and transport The city is an industrial center for petroleum and natural gas production. A branch office of the Russian petroleum company Tatneft is located in Balkanabat. Animal husbandry and production of wheat and cotton are other pursuits. Transport The city lies on the east-west M37 highway and is connected to other cities by rail and bus. While there is no official cab company, private citizens operate shared cabs. Air The Balkanabat Airport terminal was opened in October 2004 with a design capacity of 200 passengers per hour. At present Turkmenistan Airlines offers no scheduled service in or out of this airport. Rail Balkanabat sits on the Trans-Caspian Railway running east–west, connecting the capital, Ashgabat, with the Balkan Region. The railway offers both passenger and freight transport. Balkanabat Railway Station is the city's main rail station. Communication The city has one mobile operator, Altyn Asyr. Internet access and cable TV are provided by Turkmentelecom. There is one internet cafe in the city. Turkmenpochta is the official national postal service of Turkmenistan. It currently operates four post offices in the city. Education The city has an Oil and Gas Industry School, which operates as a branch of the International Oil and Gas University. The school trains students in such specialties as geology, drilling of oil and gas wells, development and operation of oil and gas fields, chemical technology of oil and gas processing, construction, operation of oil and gas storage, and oil and gas pipeline operation. It is the functional successor to the Polytechnic Institute, which was an extension of the Gubkin Russian State University of Oil and Gas in Moscow during the Soviet period. High school graduates may receive secondary-specialized education in the following vocational schools: Balkanabat Medical School, Special School of Arts, Financial and Economic Secondary Vocational School, and Oil Secondary Vocational School of the Turkmennebit State Concern. Religion The main mosque of Balkan Province has a capacity of 3,000 worshipers. Four minarets, each 63 meters high, rise above the two-story mosque. The Russian Orthodox Church of the Nativity of the Holy