The project manager for the development of the Physical Setting/Earth Science Core Curriculum was Elise Russo, Associate in Science Education, with content and assessment support provided by Sharon Miller, Associate in. Educational Testing. Diana K. Harding, Associate in Science Education, provided additional support.
Coal (from the Old English term col, which has meant mineral of fossilized carbon since the 13th century) is a combustible black or brownish-black sedimentary rock usually occurring in rock strata in layers or veins called coal beds or coal seams.
Anthracite coal is a form of coal that is almost made entirely of carbon. Anthracite coal is much harder than other forms of coal such as bituminous, and is usually found in areas surrounding mountains or deep valleys.Anthracite burns much cleaner than other forms of coal due to its low pollutant content.nthracite coal is the cleanest form of coal as it produces very little pollution and does not stain skin when touched, unlike most forms of coal. While anthracite coal is more difficult to burn, it produces more heat than other types of coal.