Gazprom main gas processing facilities in Russia. It operates Russia's high pressure gas pipelines and since 2006, it has held a legal export monopoly. Other natural gas producers, such as Novatek, Russia's second largest gas company, are forced to use Gazprom's facilities for processing and transport of natural gas. At the end of 2008, Gazprom had 221,300 employees in its major gas production, transportation, underground storage and processing subsidiaries. Of these employees, 9.5 percent were in management, 22.9 percent were specialists, 63.4 percent were workers and 4.2 percent were other employees. Gazprom's headquarters are in the Cheryomushki District, South-Western Administrative Okrug,
Gazprom in the Nadym-Pur-Taz region (near the Gulf of Ob) in Yamalo-Nenets Autonomous Okrug in Western Siberia. Historically, the three largest fields are Medvezhe, Urengoy and Yamburg. After more than twenty years of production, the fields are now in decline. Production from the fields has decreased by twenty to twenty-five bcm per year. The production at Zaporliarnoe, Gazprom's fourth largest field, increased until 2004, offsetting the decline in the other fields. Since 2004, Gazprom has maintained production by activating new smaller fields and by purchasing production assets from other companies. Gazprom Neft produces crude oil. In 2005, Gazprom purchased 75 percent