.jpg)
We also serve continuously coal purchase or contract system, because we have several points of coal in the island of Sumatera in the city rather jambi for export out of town or overseas. Coal is one of the primary energy source which has a long history of use. In Indonesia, coal deposits are economically valuable in the Tertiary basin, located in the western Sundaland (including the island of Sumatra and Kalimantan), the general economic coal deposits can be classified as Eocene coal or around the Lower Tertiary, about 45 million years ago and the Upper Miocene, or about the Tertiary, about 20 million years ago according to geological time scale. Coal is formed from peat deposits on the climate ancient around the equator that is similar to the present condition. Some of them tegolong peat dome formed above the water table averages on a wet climate throughout the year. In other words, these peat domes formed in conditions where mineral-water-borne inorganic minerals can be entered into the system and form a layer of coal ash and low sulfur grade and locally thickened. It is very common in Miocene coal. In contrast, the Eocene coal deposits are generally thinner, high levels of ash and sulfur. Both age coal deposits were formed in lacustrine environments, the coastal plain or delta, similar to the formation of peat is happening right now in eastern Sumatera.
