Coal assay heating value is based on the moisture content as mined, but without any free water. The ISO has a coal ranking system that also ranks coals; the sub-divisions do not align with the ASTM standard. "Coal Analytical Methods" Blackwell Scientific Press, 1984. Coal assay Coal analysis techniques are specific analytical methods designed to measure the particular physical and chemical properties of coals. These methods are used primarily to determine the suitability of coal for coking, power generation or for iron ore smelting in the manufacture of steel. Coal comes in four main types or ranks: lignite or brown coal, bituminous
Brown coal mining limits in North Bohemia on other foundations than only coal and coal-fired power generation is above all realistic and realisable. We'd also like to discuss the issue of employment with the Prime Minister. It would be good for him to hear that annulling the limits would not bring about a positive impact on employment in the region, but rather the contrary." The mayor of Litvínov, Milan Štovíček, called Rusnok's statement a “dirty trick” played on the population of the Usti region. “I personally see it as the biggest scam on the people since 1989. This is what only totalitarian governments allowed in the past