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
Is This Goodbye, Charlie Brown? calls him, Charlie Brown is so tired that he does not seem to be listening to what Peppermint Patty is saying. Patty invites him on a date to the movies, but makes it seem as if Charlie Brown is asking her instead. She says she would go with him to a movie, then hangs up, and goes to sleep feeling good about herself. Charlie Brown then suddenly wakes up and wonders what he was doing by the phone, thinking he just dreamt he was talking to Peppermint Patty. The next day, Peppermint Patty is waiting for Charlie Brown to pick