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
Highest Hopes: The Best of Nightwish Highest Hopes: The Best of Nightwish Highest Hopes: The Best of Nightwish is the third compilation album by Finnish symphonic metal band Nightwish. Their first, "Tales from the Elvenpath", was considered incomplete by many fans as it contains only tracks from "Oceanborn", "Over the Hills and Far Away", "Wishmaster" and "Century Child", leaving out "Angels Fall First". This compilation, though, contains songs from all previously released Nightwish albums, plus a live cover of Pink Floyd's "High Hopes". "Highest Hopes" was released in three different formats: Standard, Special Edition and Extended 2 CD. In addition to the normal version, a special