Question: What Is The Difference Between Strip Mining And Open Pit Mining?

What are the three types of mines?

There are four main mining methods: underground, open surface (pit), placer, and in-situ mining.Underground mines are more expensive and are often used to reach deeper deposits.Surface mines are typically used for more shallow and less valuable deposits.More items….

Is Surface Mining dangerous?

Surface mining (another name for “strip mining”) can severely erode the soil or reduce its fertility; pollute waters or drain underground water reserves; scar or altar the landscape; damage roads, homes, and other structures; and destroy wildlife.

Which is one of the deepest gold mine of the world?

Savuka Gold MineThe Savuka Gold Mine, situated in Gauteng, South Africa, is one of the deepest underground mines in the world.

Why is open pit mining used?

Open-pit mines are used when deposits of commercially useful minerals or rocks are found near the surface; that is, where the overburden (surface material covering the valuable deposit) is relatively thin or the material of interest is structurally unsuitable for tunneling (as would be the case for sand, cinder, and …

What are the steps of strip mining?

Strip mining is the process of removing a thin strip of overburden (earth or soil) above a desired deposit, dumping the removed overburden behind the deposit, extracting the desired deposit, creating a second, parallel strip in the same manner, and depositing the waste materials from that second (new) strip onto the …

What are 4 types of surface mining?

There are five recognized types of surface mining, each with specific variations depending on the minerals being extracted. These include strip mining, open-pit mining, mountaintop removal, dredging and highwall mining.

What are the 2 main types of mining?

Mining techniques can be divided into two common excavation types: surface mining and sub-surface (underground) mining. Today, surface mining is much more common, and produces, for example, 85% of minerals (excluding petroleum and natural gas) in the United States, including 98% of metallic ores.

Why are open pit mining and strip mining both considered to be surface mining?

Surface mining, including strip mining, open-pit mining and mountaintop removal mining, is a broad category of mining in which soil and rock overlying the mineral deposit (the overburden) are removed, in contrast to underground mining, in which the overlying rock is left in place, and the mineral is removed through …

What are the differences and similarities between strip mining and open pit coal mining?

Strip mining is sensible when the ore body is near the surface. The practice includes some of the largest machines on earth, removing long strips of overlying soil and rock and then removing coal deposits. Open-pit mining utilizes blasting and mineral removing, digger deeper into the earth causing a crater-like result.

What is the most common type of surface mining?

The three most common types of surface mining are open-pit mining, strip mining, and quarrying. See also mining and coal mining.

What is the type of strip mining?

Editor, Underground Mining Methods Handbook. Strip mining, removal of soil and rock (overburden) above a layer or seam (particularly coal), followed by the removal of the exposed mineral. The common strip-mining techniques are classified as area mining or contour mining on the basis of the deposit geometry and type.

Why is strip mining bad?

Strip mining destroys landscapes, forests and wildlife habitats at the site of the mine when trees, plants, and topsoil are cleared from the mining area. This in turn leads to soil erosion and destruction of agricultural land. When rain washes the loosened top soil into streams, sediments pollute waterways.

Does strip mining use explosives?

Many surface strip mines use explosives to move overburden in addition to the primary swing equipment (dragline or continuous excavator), displacing up to 35% of the overburden by cast blasting. … The amount of explosive in weight per cubic yard of overburden is called the powder factor.

What level should you strip mine for diamonds?

If a player is having trouble finding diamonds, make a strip mine at level 10, and it will cover layers 9 through 12. Notch has many times considered changing the diamond ore to look the same as emerald ore, but change its color to cyan instead of green. This is sometimes common around lava pools.

What are the bad effects of mining?

Across the world, mining contributes to erosion, sinkholes, deforestation, loss of biodiversity, significant use of water resources, dammed rivers and ponded waters, wastewater disposal issues, acid mine drainage and contamination of soil, ground and surface water, all of which can lead to health issues in local …

Is strip mining good?

The coal industry contends that strip mining is the best way to supply the mineral—that stripping is more efficient, less costly and much safer than underground mining. Environmentalists counter that the nation’s needs could be met by a return to deep mining.

Where are open pit mines located?

Bingham Canyon mine located south-west of Salt Lake City, Utah, US, is the deepest open pit mine in the world. The Bingham Canyon pit is more than 1.2km deep and approximately four kilometres wide. The mine, which is owned and operated by Rio Tinto Kennecott, has been in production since 1906.

What are the three mining methods?

Open-pit, underwater, and underground mining. These are the three main methods of mining we use to extract our products from the ground.