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Open cast and mining are the 2 used
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Why has the cost of coal risen?
There are two reasons for the cost of coal to rise. First, inflation causes the cost of everything to rise. Secondly, in mining, you extract the easiest deposits first, and as they are exhausted, you mine the more difficult deposits, which cost more to extract. People have mined coal for thousands of years, and we are gradually going deeper and deeper.
What are two methods used for mining coal?
it comes from lava
What are the two methods used for mining coal?
it comes from lava
How is coal mined from the earth?
The two commonest methods are deep pit mining or open cast mining. With deep=pit mining, shafts are dug vertically downwards, then tunnels excavated horizontally to extract the coal. With open-cast mining, the top-soil is simply scraped away, using large excavators, and the coal is transported away tpo be processed.
How was coal discovered?
coal was discovered by two people digging and then they found coal so then they invented coal and discovered it
How was Anthracite Coal discovered?
Anthracite coal was discovered through surface outcroppings and natural erosion exposing the coal seams. Native Americans used anthracite for fuel before European settlers arrived in North America. In the early 19th century, it became an important source of fuel for heating and industry.
What are the two methods used to extract vegetable oils?
Mechanical (pressing)Chemical (solvents)Thermal (heating)Combinations of the above
What are the two methods used to mine coal out of the ground so that you can use it to make electricity?
I forgot!! but i did study this in grade 5
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 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.
Why don't many power companies want to make the change from coal to other sources of energy?
Coal is a low cost, abundant fuel. It is estimated that at our current rate of usage we have over two hundred years of coal reserves. Coal has also become a very clean burning fuel with the recent development of sulfur removal methods.
How was coal extracted from the earth?
Coal is extracted in two methods. One is by digging tunnels into the earth and following the vein of coal, removing it by rail cart. The other is strip mining where they remove the earth above the coal and dig down to it. This way usually involves the removal of entire mountain tops to get at the coal. Recently however they have started to replant the vegetation when they are done to reclaim the land back to a natural state.
