Berlin Blockade continent for weeks. All too often, aircraft would make the entire flight and then be unable to land in Berlin. On 20 November 1948, 42 aircraft departed for Berlin, but only one landed there. At one point, the city had only a week's supply of coal left. However, the weather eventually improved, and more than 171,000 tons were delivered in January 1949, 152,000 tons in February, and 196,223 tons in March. By April 1949, airlift operations were running smoothly and Tunner wanted to shake up his command to discourage complacency. He believed in the spirit of competition between units and,
Technological and industrial history of China Approximately 25 percent of the country's coal went for steel production in 1985. In 1985 capital construction, considered excessive by the Chinese, exacerbated existing shortages of rolled steel, and imports filled 25 percent of domestic demand. The Ministry of Metallurgical Industry (now defunct) reported in 1985 that China had 13 plants capable of producing at least 1 million tons per year. Accounting for approximately 65 percent of total production, these mills were built mostly during the 1950s. The Anshan plant was the oldest and most productive of all, producing 7 million tons per year. The next largest was in Wuhan.