Serfdom in Russia industrial output, and peasants' nutrition in Imperial Russia as a result of the abolition of serfdom in 1861". In Russia, the terms () or (), refer to the obligatory work that the serfs performed for the landowner on his portion of the land (the other part of the land, usually of a poorer quality, the peasants could use for themselves). Sometimes the terms are loosely translated by the term "corvée". While no official government regulation to the extent of existed, a 1797 ukase by Paul I of Russia described a of three days a week as normal and sufficient for
Coal in Russia Irkutsk and South Yakutsk basins. The two major coal producers in Russia are Rosugol and Donugol. Over two-thirds of coal produced in Russia is used domestically. Russia is self-sufficient in coal, and consumed 223 million tons of coal in 2009. The percentage of coal in Russian power generation has been declining since 1990, when it was 20.7%, due to increasing gas consumption as well as increasing nuclear and hydroelectric energy production. Currently only 14.4% of Russia's power is produced from coal. Coal in Russia Coal is one of the largest sources of energy in Russia, accounting for 14.4% of the