Coal upgrading technology upgraded brown coal can compete in the export market at comparable prices to black coal. With significant levels of brown coal mining occurring around the world, and mining levels increasing, the need for coal upgrading technologies has become more apparent. the technologies will help to address global environmental concern of rising emissions from the burning of brown coal and provide alternative fuel options to rapidly emerging economies such as Vietnam that face difficulty competing for black coal with China, India, Japan and other nations. Because of inherent high moisture content, all lignites need to be dried prior to combustion. Depending
Coal Palace red mortar. Vitric coal was also used to spell "Coal Palace" above the main entrance. Sioux City architect Charles P. Brown was contracted to design the Coal Palace; he had previously designed the first Corn Palace in Sioux City and was at the time planning the second. Born in Salem, Massachusetts, Brown moved to Sioux City in 1886 and had designed much of its downtown. Brown recognized the inherent medieval quality of walls covered in uncut coal and capitalized on this theme by adding turrets, crenellated walls, and spired roofs. Ten flags with the names of the ten coal-donating counties