All About Coal
Black diamond "Blue Coal" is the term for a once-popular, specific, trademarked brand of anthracite, this is the specialty of NAG to mine. IMHO this stock is way undervalued and will soon rise. Here is the description of the various types of coal found around the worls. As you can see NAG is mining mostly Anthracite but we have competition as there are 600 coal mines in the United States alone. Very few mine Anthracite. . Blue Gem Coal is one of the most sought after grades of coal in the world for the production of silicon metals, commanding up to a market price 200% higher than high-grade steam coal. NAG has been trading low for a long while and is due to have increase in both volume and price.
Anthracite
Anthracite is coal with the highest carbon content, between 86 and 98 percent, and a heat value of nearly 15,000 BTUs-per-pound. Most frequently associated with home heating, anthracite is a very small segment of the U.S. coal market.
Bituminous
The most plentiful form of coal in the United States, bituminous coal is used primarily to generate electricity and make coke for the steel industry. The fastest growing market for coal, though still a small one, is supplying heat for industrial processes. Bituminous coal has a carbon content ranging from 45 to 86 percent carbon and a heat value of 10,500 to 15,500 BTUs-per-pound.
Sub-bituminous
Ranking below bituminous is sub-bituminous coal with 35-45 percent carbon content and a heat value between 8,300 and 13,000 BTUs-per-pound. Although its heat value is lower, this coal generally has a lower sulfur content than other types, which makes it attractive for use because it is cleaner burning.
Lignite
Lignite is a geologically young coal which has the lowest carbon content, 25-35 percent, and a heat value ranging between 4,000 and 8,300 BTUs-per-pound. Sometimes called brown coal, it is mainly used for electric power generation.