There are no documented records of when or how mankind first discovered that a certain "black rock" would burn. However, it is known that coal was employed as a fuel in China circa 1100 BC and that Welsh Bronze Age cultures had used coal for funeral pyres. There are many other instances where coal receives some mention in the histori…
Coal petrology ,when employed effectively,is one of the most important tools we have for the management of coal as a producer of energy .to understand the properties of coal in utilization ,coal by-products and their applications ,one requires a thorough appreciation of coal composition and how coal impacts our health and environment.applied coal petrology :the role of petrology in col utilizat…