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What type of mine may be used to remove coal from a coal seam deep underground?
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What are two types of coal mining?
Surface mining is used to produce most of the coal because it is less expensive than underground mining. Surface mining can be used when the coal is buried less than 200 feet underground.In surface mining, giant machines remove the top soil and layers of rock known as "overburden" to expose the coal seam. Once the mining is finished, the dirt and rock are returned to the pit, the topsoil is replaced, and the area is replanted.Underground mining, sometimes called deep mining, is used when the coal is buried several hundred feet below the surface. Some underground mines are 1,000 feet deep. To remove coal in these underground mines, miners ride elevators down deep mine shafts where they run machines that dig out the coal.
What are two ways to mine coal?
Coal is mined by two methods: surface or 'opencast' mining or underground or 'deep' mining.The choice of mining method largely depends on the geology of the coal deposit. Underground mining currently accounts for a bigger share of world coal production than opencast; although in several important coal producing countries surface mining is more common.
How deep are underground coal mines?
we dont say a fix depth of underground mine becoz that is depends on geological conditions of the area where we mined and also depends the property of mineral which have to be mined. Companies engaged in this industry extract coal that lies 200 to 1,000 feet below the earth's surface, though some mines are as deep as 2,000 feet.
What mine starts near the surface and extends deep underground?
The type of mine is called a strip mine.
How deep down is a bituminous coal mine vertical shaft?
There are 2 kinds of coal mine shafts-- slope or dug horizontally then down, or a vertical shaft dug nearly straight down. Some coal mines use both--a wide tunnel dug as a slope, then down. However, in the 1800s, they often crawled into a slope mine.Depth of either type, and for either bituminous coal or anthracite coal, can be 1,000 to 2,000 feet underground. Most mines also have labyrinths of tunnels throughout, which can go to different depths.
What are two types of coal mining?
Surface mining is used to produce most of the coal because it is less expensive than underground mining. Surface mining can be used when the coal is buried less than 200 feet underground.In surface mining, giant machines remove the top soil and layers of rock known as "overburden" to expose the coal seam. Once the mining is finished, the dirt and rock are returned to the pit, the topsoil is replaced, and the area is replanted.Underground mining, sometimes called deep mining, is used when the coal is buried several hundred feet below the surface. Some underground mines are 1,000 feet deep. To remove coal in these underground mines, miners ride elevators down deep mine shafts where they run machines that dig out the coal.
Can one use mining machinery to dig deep within the earth?
Surface mining can be used when the coal is buried less than 200 feet underground. ... is buried deep within the earth. Some underground ... mine shafts to run machines that dig out the coal. ... In one place, coal is crushed, mixed with water, ... industries use coal, too. Paper, brick, limestone, and
How do you mine coal?
Coal is mined by two methods: surface or 'opencast' mining or underground or 'deep' mining.The choice of mining method largely depends on the geology of the coal deposit. Underground mining currently accounts for a bigger share of world coal production than opencast; although in several important coal producing countries surface mining is more common.
What are two ways to mine coal?
Coal is mined by two methods: surface or 'opencast' mining or underground or 'deep' mining.The choice of mining method largely depends on the geology of the coal deposit. Underground mining currently accounts for a bigger share of world coal production than opencast; although in several important coal producing countries surface mining is more common.
How deep are underground coal mines?
we dont say a fix depth of underground mine becoz that is depends on geological conditions of the area where we mined and also depends the property of mineral which have to be mined. Companies engaged in this industry extract coal that lies 200 to 1,000 feet below the earth's surface, though some mines are as deep as 2,000 feet.
What mine starts near the surface and extends deep underground?
The type of mine is called a strip mine.
What is a coal mine?
A coal mine is a place where coal is dug out of the earth. Some mines are completely underground and depend on tunnels to take miners to the coal. Other places, known as strip mines, are open pits in the ground where the coal is dug out.
How deep in the ground do you have to dig to find metals?
Depending on what you want to mine dictates how deep you have to mine. Take coal for an example. - Coal comes in layers the coal at the top is cheap and the coal lower down is more mature and is worth more. Therefore if you want good coal you will have to dig a long way down.Some underground mines are well over one mile deep. 120 metres
What process is used to mine coal underground?
Underground mines consist of a series of parallel and interconnecting tunnels from which the coal is cut and removed with special machinery. The process is complex and sometimes dangerous.
Is surface mining is less coast and inexpensive?
Surface mining is MUCH less expensive than underground mining. Usually. In some cases, underground mining is used because the substance being mined is just too deep to have a surface mine. I was just in a silver mine that is more than 5,000 feet deep. If the mine had to remove a mile of rock to get to the silver, it would not be worth mining. In THAT case, underground mining is less costly.
Where do you mine coal at the surface or underground?
Geological conditions of the earth surface or UG surface decide where we mined coal. And also depth or thickness of coal seam.
What effect does the fresh circulating oxygen have in an underground space like coal and mine?
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