Gold can be mined by either method.
underground mining is done when the rocks, minerals of gemstones are too far underground to get out with surface mining some kinds of underground mining are Borehole Mining Drift Mining Hard Rock Mining Shaft Mining Slope Mining
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types of underground mining methods - unsuported(natural suport)mining method -saported(artificial support)mining method - caving method
it is open not underground (it has no roof)
Yes. This is correct, but next time you might want to check your k12 earth science book for help. =)
It depends on the method of mining adopted. in case of openpit mines with large size fleet the biggest cost items are diesel, tyres and spares In case of manual underground mines the biggest cost items would be wages
By mining underground. Usually the deeper you mine, the higher the chance of finding gold.
underground mining is done when the rocks, minerals of gemstones are too far underground to get out with surface mining some kinds of underground mining are Borehole Mining Drift Mining Hard Rock Mining Shaft Mining Slope Mining
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J. P. Leger has written: 'Towards safer underground gold mining' -- subject(s): Gold mines and mining, Safety measures
Surface mining occurs close to the surface (less than a mile deep), while underground mining is underground.
Some mining is done by scraping away the soil (dirt) from the top of the ground. This is called strip mining. Some mining is done by going deep underground into a mine shaft. Some mining, such as gold mining, is done in other ways. Gold can be mined by searching in the bed of a river or other stream of water to remove the flakes of gold. This is called panning or placer mining.
types of underground mining methods - unsuported(natural suport)mining method -saported(artificial support)mining method - caving method
Strip mines,Openpit mines & shaft mines
it is open not underground (it has no roof)
Underground mining surface mining
underground mining