SUBBITUMINOUS COAL is a dull black coal with a higher heating value than lignite. It is found primarily in the western United States.
Barry Goldsmith
| APA | Barry Goldsmith. (2010). SUBBITUMINOUS COAL. Retrieved September 23, 2026, from http://smartdefine.org/subbituminous_coal/definitions/1164437 |
| Chicago | Barry Goldsmith. 2010. "SUBBITUMINOUS COAL" http://smartdefine.org/subbituminous_coal/definitions/1164437 (accessed September 23, 2026). |
| Harvard | Barry Goldsmith 2010, SUBBITUMINOUS COAL, Smart Define, viewed 23 September, 2026, <http://smartdefine.org/subbituminous_coal/definitions/1164437>. |
| MLA | Barry Goldsmith. "SUBBITUMINOUS COAL" 21 October 2010. Web. 23 September 2026. <http://smartdefine.org/subbituminous_coal/definitions/1164437> |