A dense coal, usually black, sometimes dark brown, often with well-defined bands of bright and dull material, used primarily as fuel in steam-electric power generation, with substantial quantities a [..]

A term generally applied to carbon dioxide. Strictly speaking, it is a mixture of carbon dioxide and nitrogen. It is also applied to an atmosphere depleted of oxygen, rather than having an excess of c [..]

The most common coal, which is dense, black and has a moisture content of less than 20%. Used for generating electricity, making coke, and space heating

 The most common coal. It is dense and black (often with well-defined bands of bright and dull material). Its moisture content usually is less than 20 percent. It is used for generating electricity, making coke, and space heating.

A soft coal formed by an intermediate degree of metamorphism and containing 15 to 20 percent volatiles. The most common grade of coal.

The coal ranked below anthracite. It generally has a high heat content and is soft enough to be readily ground for easy combustion. Bituminous accounts for the bulk of all coal mined in the United States.

A dark brown to black Coal that is high in carbonaceous matter and has 15-50% volatile matter. Also known as soft Coal. (McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed)

A type of coal, called “soft coal,” containing 46 to 85 percent carbon that formed from medium-grade metamorphism of lignite.

Middle rank coal (between subbituminous and anthracite) formed by additional pressure and heat on lignite. Usually has a high Btu value and may be referred to as "soft coal."

An intermediate rank of coal falling between the extremes of peat and anthracite, and closer to anthracite

soft coal