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 that if supplies were cut, it would deny Gazprom access to its pipelines, which would impair gas transportation to Europe. However, on 1 January 2007, just a few hours before the deadline, Belarus and Gazprom signed a last-minute agreement. Under the agreement, Belarus undertook to pay $100 per 1,000 cubic metre in 2007. The agreement also allowed Gazprom to purchase 50 percent of the shares in Beltransgaz, the Belarusian pipeline network. Immediately following the signing of this agreement, Belarus declared a $42/ton transportation tax on Russian oil travelling through the Gazprom pipelines crossing its territory. On 13 March 2008, after