• How coal is mined


Related details

1.Coal mining is the process of extracting coal from the ground Coal is valued for its energy content, and, since the 1880s, has been widely used to generate electricity Steel and cement industries use coal as a fuel for extraction of iron from iron ore and for cement production In the United Kingdom and South Africa, a coal mine and its structures are a colliery, a coal mine a pit, and the

2.Coal mining: Coal mining, extraction of coal deposits from the surface of Earth and from underground Coal is the most abundant fossil fuel on Earth Its predominant use has always been for producing heat energy It was the basic energy source that fueled the Industrial Revolution of the 18th and 19th

3.Mining the Coal Coal miners use giant machines to remove coal from the ground They use two methods: surface or underground mining Many US coal beds are very near the ground's surface, and about twothirds of coal production comes from surface mines

4.According to the World Coal Association, more than 6,185 million tonnes Mt of hard coal was mined from coal mines around the world as of 2012 Coals mines use surface mining for coal deposits buried less than 200 feet underground In this type of mining, giant machines remove topsoil and layers of rock to expose large beds of coal After coal extraction, the topsoil is replaced so that the

5.Coal is the largest source of electricity in the world Each year we mine enough coal to give over 1 ton of it to every single person on the planet Each year we mine enough coal to give over 1 ton of it to every single person on the planet

6.Two dominant methods account for the vast majority of underground coal mining: "room and pillar" and "longwall" mining In room and pillar mining, seams of coal are partially mined, leaving large pillars of coal intact to support the overlying layers of rock

7.In surface mining, the ground covering the coal seam the overburden is first removed to expose the coal seam for extraction The elements of a surface mining operation are 1 topsoil removal and storage for later use, 2 drilling and blasting the strata overlying the coal seam, 3 loading and

8.Background Information How is coal mined As was the case 50 years ago, most coal is produced from two major types of mines underground and surface But the methods for recovering coal from the earth have undergone drastic changes in the past 25 years,

Contact us