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 Neft These companies are developing fields in the Yamalo-Nenets and Khanty-Mansi autonomous areas and the Omsk, Tomsk, Tyumen and Irkutsk regions. Gazprom Neft also holds 50% stakes in three dependent companies: Slavneft, Tomskneft and Salym Petroleum Development. In 2010, Gazprom Neft partnered with Novatek to acquire 51%of SeverEnergia which owns Arktikgaz and Urengoil companies. In 2012, Gazprom Neft refined 43.3 million tonnes of oil. The company wholly or partly owns 5 oil refineries (the Omsk Oil Refinery, Moscow Oil Refinery, Slavneft-Yaroslavnefteorgsintez (YANOS) and two oil refineries in Pančevo and Novi Sad that belong to Naftna Industrija Srbije). The company operates around