1) Sedimentary rock 2) Soft coal 3) Symbol of West Virginia
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https://www.crosswordclues.com/clue/bituminous-coal
Bituminous coal or black coal is a relatively soft coal containing a tarlike substance called bitumen. It is of higher quality than lignite coal but of poorer quality than anthracite. Formation is usually the result of high pressure being exerted on lignite. Its coloration can be black or sometimes dark brown; often there are well-defined bands of...
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http://en.wikipedia.org/wiki/Bituminous_coal
the most abundant form of coal, intermediate in rank between subbituminous coal and anthracite according to the coal classification used in the ...
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http://www.britannica.com/eb/a-z/b/70
A 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.'
Found on
http://www.coaleducation.org/glossary.htm
Bituminous coal. Credit: Mineral Information Institute 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 i...
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http://www.daviddarling.info/encyclopedia/B/AE_bituminous_coal.html
A shiny black coal that develops from deeply buried lignite through heat and pressure, and that has a carbon content of 80% to 93%, which makes it a more efficient heating fuel than lignite.
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http://www.encyclo.co.uk/local/22291
A rank of coal that falls between anthracite and semi-bituminous. The most abundant rank of coal. Fr
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http://www.encyclo.co.uk/local/22392
A dense, black, soft coal, often with well-defined bands of bright and dull material. The most common coal, with moisture content usually less than 20 percent. Used for generating electricity, making coke, and space heating. See coal.
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http://www.encyclo.co.uk/visitor-contributions.php
A middle rank coal formed by pressure and heat on lignite
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http://www.juniorminers.com/glossary.html
A soft coal formed by an intermediate degree of metamorphism and containing 15 to 20 percent volatiles. The most common grade of coal.
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http://www.scientificpsychic.com/etc/geology-glossary.html
[
n] - rich in tarry hydrocarbons
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http://www.webdictionary.co.uk/definition.php?query=bituminous%20coal
soft coal noun rich in tarry hydrocarbons; burns readily with a smoky yellow flame
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https://www.encyclo.co.uk/local/20974
A mineral coal that contains volatile hydrocarbons and tarry matter and burns with a yellow, smoky flame; soft coal.
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https://www.encyclo.co.uk/local/22733
a mineral coal that contains volatile hydrocarbons and tarry matter and burns with a yellow, smoky flame; soft coal.
Found on
https://www.infoplease.com/dictionary/bituminous-coal
No exact match found.
