We are able to provide Anthracite coal at GAR 4,000 - 6,500 Kcal/kg. contains 86%-97% carbon and generally has the highest heating value of all ranks of coal. Anthracite accounted for less than 1% of the coal mined in the All of the anthracite mines in the Laos are anthracite is mainly used by the metals industry. We are able to provide Anthracite Coal at GAR 4,300 â?? 6,500 Kcal/kg