Gazprom 1980s, the Ministry of Gas Industry found large natural gas reserves in Siberia, the Ural region and the Volga region. The Soviet Union became a major gas producer. In August 1989, under the leadership of Viktor Chernomyrdin, the Ministry of Gas Industry was renamed the "State Gas Concern Gazprom", and became the Soviet Union's first state run corporate enterprise. In late 1991, when the Soviet Union dissolved, gas industry assets were transferred to newly established national companies, such as Ukrgazprom and Turkmengazprom. Gazprom kept assets located in Russia and secured a monopoly in the gas sector. In December 1992, when
Gazprom is Gazprom Export LLC, founded in 1973 and before November 1, 2006 known as Gazexport, which has a monopoly on gas exports to countries outside of the former Soviet Union. The majority of Russian gas in Europe is sold on 25 year contracts. In late 2004, Gazprom was the sole gas supplier to Bosnia and Herzegovina, Estonia, Finland, Macedonia, Latvia, Lithuania, Moldova, Serbia and Slovakia. It provided 97 percent of Bulgaria's gas, 89 percent of Hungary's gas, 86 percent of Poland's gas, nearly 75 percent of the Czech Republic's, 67 percent of Turkey's, 65 percent of Austria's, about 40 percent