This article talks about coal-fired power plants, the different types of coal, and how coal is processed and cleaned before use. It explains how coal-burning power plants work and how they can be made cleaner to reduce pollution. The goal is to make coal more efficient and environmentally friendly for generating power. Coal cleaning methods can remove impurities and moisture from coal, making it burn better with less pollution. By cleaning coal before burning it, power plants can reduce sulfur emissions and produce less ash and slag, which can help the plants run better and be easier to maintain. In essence, cleaning coal can make power plants more efficient and reduce their impact on the environment.