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
That's What Love Is For That's What Love Is For "That's What Love Is For" is a 1991 Billboard Adult Contemporary chart #1 hit single and a Billboard Hot 100 top 10 single by Christian music singer Amy Grant. It was the third pop single off her 5x platinum selling album Heart in Motion and the only one from the album to be released both to secular and Christian radio. It was the second Christian radio single. In the United States the song was #1 for 3 weeks on Billboard's Adult Contemporary chart, spending 13 weeks in the Top 10 and 32 weeks on the