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
Brown Bear, Brown Bear, What Do You See? Brown Bear, Brown Bear, What Do You See? Brown Bear, Brown Bear, What Do You See? is a children's picture book published in 1967. Written and illustrated by Bill Martin, Jr. and Eric Carle, the book is designed to help toddlers associate colors and meanings to objects. The book itself has little to no plot. Instead, the narrator asks various animals what they see with the response usually being another animal, the respondent is then asked what they themselves see, and the process is repeated. It features a Brown Bear, Red Bird, Yellow Duck, Blue Horse, Green Frog, Purple Cat,