![]() ![]() ![]() The radioactive substances like uranium, heavy metals also contaminate the water bodies and kill aquatic animals. It severally degrades water quality, and can kill aquatic life and make water virtually unusable. The acid mine drainage often contaminates the nearby streams and lakes. Sulfur in one react with water and oxygen to form sulfuric acid which leaks out from the mine. Sulphur, usually present as an impurity in many ores is known to get converted into sulphuric acid through microbial action, thereby making the water acidic. ![]() Generally, coal is mined in this process. It is kept in mind that the tunnels are made airy for miners to work without any problems. The materials to be extracted are situated deep inside and elevators are used to take the miners up and down. The deepest form of underground mining, this is done by excavating a vertical passageway deep down. Generally, coal or iron ore is mined through this process. The materials are easier to access and the mouth is made slightly lower than the resource area so as to allow gravity to pull down the materials easily. This process is carried out when the material is situated sideways of a mountain. This is typically the mine that comes to our minds when we think of it. The tunnels are supported by pillars through which miners can move about. Here tunnels deep in the ground are dug sometimes with dynamite or large drills. ![]()
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