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
The Coal Question coal production did in fact peak in 1913, but at 292 million tons, about half the amount Jevons' extrapolation suggested. Just under a third of this was exported. Since then, production has dropped to less than 20 million tons. Current UK resources are estimated at about 400 million tons. According to Jevons, coal depletion had serious ramifications for population growth. The population of the UK had increased by more than 10% each decade for the prior 70 years, not surprising given that coal production was growing at 40% per decade, meaning that the "per capita" wealth was growing. "For the