Coal upgrading technology Coal upgrading technology Coal upgrading technology refers to a class of technologies developed to remove moisture and certain pollutants from low rank coals such as sub-Bituminous coal and lignite (brown coal) and raise their calorific values. Companies located in Australia, Germany and the United States are the principal drivers of the research, development and commercialisation of these technologies. Around 30 nations collectively operate more than 1,400 brown coal-fired power stations around the world. Brown coal power stations that cannot economically dewater brown coal are inefficient and cause of high levels of carbon emissions. High emitting power stations, notably the Hazelwood
Central Scientific Company bombsights for airplanes and fuses for large bombs. After 1968, the company began having financial difficulties. In 1974, the assets were sold off to competitors. The educational business retained the name Central Scientific Company. In April 1979, Central Scientific's assets and activities were acquired by two businessmen from Buffalo, New York. They sold the business to Sargent-Welch (their main competitor) in 2000. Central Scientific Company Central Scientific Company was founded in 1900 in downtown Chicago. It was formed out of what was left of the Olmstad Scientific Company. Central Scientific manufactured and distributed science teaching equipment for schools, colleges, and