Air cargo the area surrounding the city and thus land access. As this access was closed, in the so-called Berlin blockade, an airlift remained the only option to get increasingly urgent deliveries of food, coal, and other supplies to West Berlin. Over 330 days to 12 May 1949 a total of 2.26 million tons of cargo were airlifted to Berlin, an average of 6,800 tons a day, 80% by the US and 20% by the UK. Although freight traffic developed modestly, reaching only 800,000 tonnes worldwide by the mid-1950s, the world economy was hitting its post-war stride. Germany and Japan were emerging
History of coal mining higher rations of food. Output doubled and the share of the region in the total national coal production rose from 8% to 22%. In 1989-91 militant coal miners in Russia and Ukraine were the mainstay of the revolutionary forced which finally overthrew the Communist system in 1991. Today the Donets Basin is the major coal-mining district in eastern Ukraine and adjacent portions of Russia. Production during 2009 was 68.7 million tons in the Ukrainian and 4.9million tons in the Russian part of the basin, but coal gas is a major hazard. The coal industry in China goes back many centuries.