Coal assay 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 coal or black coal, anthracite and graphite. Each type of coal has a certain set of physical parameters which are mostly controlled by moisture, volatile content (in terms of aliphatic or aromatic hydrocarbons) and carbon content. Moisture is an important property of
What Cheer, Iowa What Cheer, Iowa What Cheer (pronounced 'WOT-cheer') is a city in Keokuk County, Iowa, United States. It is a former coal town, and from the 1870s to the early 1900s was one of the major coal-producing centers of Iowa. Its greatest recorded population was 3,246, in the 1890 census. Since the 1910s, the population has fallen to 646 in the 2010 census. What Cheer was founded in 1865 as Petersburg, named after Peter Britton, its founder. This name was rejected by the Post Office, forcing a change of name. Joseph Andrews, a major and veteran of the American Civil War,