What is open pit mining

what is open pit mining

Differences between underground mining and open pit mining

Feb 21,  · Just like the name suggests, open-pit mining is a type of mining operation that involves the digging of an open pit as a means of gaining access to a desired material. This is a type of surface mining that involves the extraction of minerals and other materials that are conveniently located in close proximity to the surface of the mining site. Open-pit mining, also known as opencast mining, is a surface mining technique that extracts minerals from an open pit in the ground. Open-pit mining is the most common method used throughout the world for mineral mining and does not require extractive methods or tunnels.

Open pit mines are those mining operations that take place on the surfaceunlike the underground mines. This is possible when the reservoir sprouts on the surface or at a very small depth.

It began to be realized in the middle of the XVI century and it is used all over the world. In order to be carried out, the excavation using machinery or explosives of the lands surrounding the site is necessary. That material that is not exploitable on the farm is called sterile and is deposited in dumps located outside the mine site, which will be used in the future what kind of gpa is needed for law school restore it once it is exhausted.

Open pit mining is profitable when the deposit is not very deep or when the terrain is sandy or delicate, so that underground mining is not possible.

Labor costs are lower, both in excavation and transportation, and allow the use of large machinery. It does not require artificial lighting and allows the use of explosives of any kindwithout forgetting that the safety and hygiene of workers is much better.

However, it is true that it has environmental implications to considerwhich generates a strong environmental impact aesthetic, noise, dust in the area and that the work is carried out in the open. The need to work a large area of?? One of the main disadvantages of this type of mining operation is the environmental impact it causes. Since cyanide, mercury and sulfuric acid are used to remove the wastewater, groundwater and air are contaminated as toxic dust.

This is absorbed how is herpes passed from person to person animals and plants. The excavation itself generates a sound impact that scares away the animals of the area, which causes a change in the habitat of many species. In addition, we work on a large area of?? This diminishes the aesthetic appeal and tourism of the area, and disturbs the communities.

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Open-pit Mining Operations

Open-pit mining, surface mining (q.v.) to obtain minerals other than coal. Open pit mining refers to mining directly on the ground surface, thereby producing an open pit. This method is practical and cost-effective when the uranium ore is located near the surface (e.g., within m). Underground mining and ISL methods may be considered for sites that have uranium ores at . The definition of a open pit mine is "an excavation or cut made at the surface of the ground for the purpose of extracting ore and which is open to the surface for the duration of the mine’s life." To expose and mine the ore, it is generally necessary to excavate .

On all continents, the oceans, and ultimately, from pole to pole, appear concentrations of minerals — metalliferous, nonmetallic, nuclear, industrial, and application rocks — which are likely to be economically exploited. The tectonic movements that break the crust into blocks, can drag these rocks and their minerals to different depths or at different heights.

On the other hand, minerals can be concentrated in small spaces, in case of a vein or be scattered in large volumes of rock. When the minerals are found in rich veins but in large volumes of sterile rocks, the only way to mine them is the underground mining method. These consist of opening galleries, tunnels, and other forms of mining art that allow us to take advantage in an orderly manner of the veins in their three-dimensional development.

Normally, a vertical master well, called a pique, is made, from which the vein is accessed through horizontal galleries. The material obtained, usually precious minerals or non-ferrous metals, are moved to the surface where they are subjected to grinding and concentration processes to benefit them and enrich them, separating the useful metal from the ore, from the accompanying or sterile mineral, called gangue.

The Aguilar mine Jujuy , which in completed 84 years of uninterrupted work, is a deposit of zinc silver that is mined underground. The Witwatersrand gold mine in South Africa is an excellent example of underground mining that exploits gold from ancient rocks at depths of up to 4 km underground. On the other hand, open-pit mining is the most common mining and ranges from very low-priced minerals to finely disseminated gold deposits. Among the low-priced ones we find clay quarries for the manufacture of bricks quarries for the exploitation of construction aggregates gravel, sands , quarries for the extraction of rocks for lime limestone , for cements marl, gypsum, limestones , for ornamentation marbles, granites, onyx , among others.

As can be seen, no one chooses to exploit an open or underground pit, but the conditions of nature that concentrate the metals in one way or another. To try to change this is to pretend to change nature. Search Search for: Search. Improving your life knowledge health and family. Table of Contents. Economics -Increased investment per ton produced.

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