Coal mining is the process of extracting coal from the ground. Coal is a fossil fuel formed from the remains of plants that lived millions of years ago. It is found in underground deposits called coal seams.

There are two main types of coal mining: surface mining and underground mining.

Surface mining, also known as _open-pit mining_, is used to extract coal from seams that are close to the surface. This type of mining involves removing the overlying layers of soil and rock to expose the coal seam. The coal is then extracted using large machines called draglines or shovels.

Underground mining is used to extract coal from seams that are located deep underground. This type of mining involves digging shafts or tunnels into the ground to reach the coal seam. The coal is then extracted using various methods, such as room-and-pillar mining or longwall mining.

Once the coal has been extracted, it is transported to a processing plant, where it is cleaned and prepared for use. The coal is then shipped to power plants, steel mills, and other industrial facilities, where it is used to generate electricity, produce steel, and make other products.

Coal mining can have a significant impact on the environment. Surface mining can cause deforestation, erosion, and water pollution. Underground mining can release harmful gases and dust into the air, and it can also cause subsidence, which is the sinking of the land above the mine.

In order to minimize the environmental impact of coal mining, mining companies are required to follow strict regulations and standards. These regulations cover everything from the way the coal is extracted to the way the mine is reclaimed after mining is complete.