Anthracite latter in two or three sizes, all three being above in (38 mm) size on round-hole screens. High grade (HG) and ultra high grade (UHG) anthracite are the highest grades of anthracite coal. They are the purest forms of coal, having the highest degree of coalification, the highest carbon count and energy content and the fewest impurities (moisture, ash and volatiles). High grade and ultra high grade anthracite are harder than standard grade anthracite, and have a higher relative density. An example of a chemical formula for high-grade anthracite would be CHONS, representing 94% carbon. UHG anthracite typically has a
Carbon County, Pennsylvania the Wyoming Valley and the northern sections of the Coal Region. Carbon County is the location of the trials and executions of the controversial Molly Maguires, an Irish secret society that had been accused of terrorizing the region. Carbon County has a rich history. Some interesting people have passed through her mountains, including the Moravian mystic Count Zinzendorf, Benjamin Gilbert, John James Audubon, Benjamin Franklin, and many more. Blessed with a unique geography, Carbon County dazzled the adventurous travelers of the Victorian era, just as it attracts adventurers today. Aesthetically not much has changed of this unique landscape; written in