Live matter, such as plants and animals. It then was covered in mud most likely, and compression made it coal. This is just a general overview of what actually happens however, and is by no means an in depth explanation.
Plants; mostly trees.
Coal deposits are commonly referred to as coal seams or coal beds. These are layers of coal that are found buried beneath the Earth's surface.
A layer of coal underground is called a coal seam. This seam is a continuous layer or sheet of coal that is buried beneath the surface of the Earth.
Coal
Coal - 2011 Buried in Coal - 1.4 was released on: USA: 20 April 2011
Coal - 2011 Buried in Coal 1-4 was released on: USA: 20 April 2011
Carbon
Coal is typically found in sedimentary rock layers within the Earth's crust, often formed from compressed plant material over millions of years. It is commonly mined from coal beds or seams that are buried beneath the surface. These coal deposits are found in different regions around the world where the conditions for coal formation were present.
Buried Alive in a Coal Mine - 1913 was released on: USA: January 1913
The cast of Buried Alive in a Coal Mine - 1913 includes: Joseph Graybill
Coal is made of dead plant matter that has been buried and been compacted.
coal