Coal

Coal is a fossil fuel that is formed from the remains of ancient plants and animals. It is a black or brownish-black sedimentary rock that is primarily composed of carbon, along with various other elements such as sulfur, hydrogen, oxygen, and nitrogen. Coal is typically extracted from underground mines or surface mines through a process of drilling, blasting, and digging.

​

Coal is primarily used as a source of energy for electricity generation and industrial processes such as steel production. It is also used in the production of chemicals, fertilizers, and other products. Despite its widespread use, coal is a non-renewable resource and its extraction and use have significant environmental impacts, including air and water pollution and greenhouse gas emissions.