Low Energy Coal (Brown Coal): This type of coal is the lowest rank, easily brittle, soft, has a high moisture content (10-70%), consists of low energy soft coal (soft brown coal) and lignitic coal which exhibits a wood structure. . The calorific value is < 7000 calories per gram (in dry–ASTM form).
Low – Volatile Bituminous ; It is a group of coal in the bituminous rank that contains a fixed carbon percentage of >78% – <86% and a volatile matter content percentage of >14% – <22% (in dry condition).
