Question

How are minerals extracted from the earth ?​

Answer 1

Answer:

The primary methods used to extract minerals from the ground are: Underground mining. Surface (open pit) mining. Placer mining.

Explanation:

How do we extract minerals?

The primary methods used to extract minerals from the ground are:

Underground mining

Surface (open pit) mining

Placer mining

The location and shape of the deposit, strength of the rock, ore grade, mining costs, and current market price of the commodity are some of the determining factors for selecting which mining method to use.

Higher-grade metallic ores found in veins deep under the Earth’s surface can be profitably mined using underground methods, which tend to be more expensive. Large tabular-shaped ore bodies or ore bodies lying more than 1,000 feet (300 m) below the surface are generally mined underground as well. The rock is drilled and blasted, then moved to the surface by truck, belt conveyor, or elevator. Once at the surface, the material is sent to a mill to separate the ore from the waste rock.

Lower grade metal ores found closer to the surface can be profitably mined using surface mining methods, which generally cost less than underground methods. Many industrial minerals are also mined this way, as these ores are usually low in value and were deposited at or near the Earth’s surface. In a surface mine, hard rock must be drilled and blasted, although some minerals are soft enough to mine without blasting.

Placer mining is used to recover valuable minerals from sediments in present-day river channels, beach sands, or ancient stream deposits. More than half of the world’s titanium comes from placer mining of beach dunes and sands. In placer operations, the mined material is washed and sluiced to concentrate the heavier minerals.

Answer 2

Answer:

extraction of minerals from the earth is called mining there are hundreds of minerals that our mind method used in mining depends on depth at which the minerals are located there are three basic extraction of minerals method first qualifying then mining and then drilling mining is off too kind open cast mining and shaft mining minerals that are located very close to the surface are simply dug dug by acquiring when minerals are located at the shallow depth they are taken out by removing the surface layer this method is open pit or open cast mining minerals depositor found upon the Earth surface and dug doubt by the boss called shark and this method is called shaft mining many underground Chambers in a shaft mine are there - news live to reach the Chambers and to extract and natural gas deep wells are dug and is called drilling