Containing or made with bitumen. Containing natural asphalt.
A high quality coal that produces little ash when burned and is therefore good for steam generation in locomotives and power plants. Bump A natural settling of the earth, caused by gas release within the earth's crust, quite common in underground coal mines.
a middle ranking coal formed by pressure and heat on lignite. This coal usually has a high BTU value and may be referred to as soft coal. It is the most common coal in the United States and is used to generate electricity and to make coke for the steel industry.
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 also used for heat and power applications in manufacturing and to make coke. Bituminous coal is the most abundant coal in active U.S. mining regions. Its moisture content usually is less than 20 percent. The heat content of bituminous coal ranges from 21 to 30 million Btu per ton on a moist, mineral-matter-free basis. The heat content of bituminous coal consumed in the United States averages 24 million Btu per ton, on the as-received basis (i.e., containing both inherent moisture and mineral matter).
A soft coal that, when heated, yields considerable volatile matter.
resembling or containing bitumen; "bituminous coal"
bitumen is a mixture of hydrocarbons found in asphalt and tar or distilled from petroleum or oil. Frequently used in many roofing materials.
A subclass of coal, high in carbonaceous matter.
A coal which is high in carbonaceous matter having a volatility greater than that of anthracite and a calorific value greater than that of lignite. In the US, it is often referred to as "soft coal".
Coal which is commonly called “soft coal,” is high in carbon, and ranked between anthracite and lignite. Bituminous coal is most abundant in the Eastern states.
Type of coal with carbon content from 45% to 86% and heat value of 10,500 to 15,500 BTUs-per-pound; most plentiful form of coal in U.S.; used primarily to generate electricity and make coke for steel
containing bitumen, a heavy form of petroleum (oil) found in nature
Describing a substance that contains organic matter, mostly in the form of tarry hydrocarbons.
containing or treated with bitumen. Examples: bituminous concrete, bituminous concretes, bituminous felts and fabrics, bituminous pavement.