Why would a mining company choose to do a surface mine why would it choose to do an underground mine?

Haley Smith asked a question: Why would a mining company choose to do a surface mine why would it choose to do an underground mine?
Asked By: Haley Smith
Date created: Tue, Jul 13, 2021 3:54 AM

Content

Top best answers to the question «Why would a mining company choose to do a surface mine why would it choose to do an underground mine»

Why Choose Surface Mining? Surface mining is often the preference for mining companies. This is because removing the terrain surface, or overburden, to access the mineral beneath is often more cost-effective than gouging tunnels and subterranean shafts to access minerals underground.

FAQ

Those who are looking for an answer to the question «Why would a mining company choose to do a surface mine why would it choose to do an underground mine?» often ask the following questions:

❔ Is gold surface or underground mining?

It can be both. Right now, the largest gold mine in Australia is an open pit mine. However, The Homestake mine in South Dakota was 8000 ft deep- an underground mine with 375 miles of passageways. It all depends on where the gold is located.

❔ Is surface or underground mining worse?

Surface mines offer advantages and disadvantages when compared to underground mining. Amongst the advantages are that it is cheaper, can recover more of the resource (usually up to 100% within the mining excavation), is safer and can use larger-scale mining equipment offering higher production rates.

❔ What is surface and underground mining?

Surface mining. Surface mining is a type of mining in which the soil and rock covering the ...

Question from categories: hard rock mining mining equipment mining industry opencast mining surface mining

10 other answers

The two main methods of mining are surface mining and underground mining. Placers are a type of surface deposit. Surface Mining. Surface mining is used to obtain mineral ores that are near the...

It is a general rule that technological factors dictate a clear choice between surface and underground mining, whereas economic and social factors determine whether a coal reserve will be mined at all.

Mining companies that want to open a mine or refinery are often faced with resistance and lack of support from the local community. Our plan requires that mining companies need to ensure that they minimize local environmental impacts and publicize how their presence will benefit local communities through providing an infusion of jobs and capital ("Environmental and Social Aspects of Mining"). Another factor that must be considered is whether the local community can support the roads and ...

Surface mining is suitable for large, low-grade ore deposits which occur below a thin layer of rock, or alluvial deposits found in sand and riverbeds. Underground mining is used for small, high-grade deposits covered with a thick overburden (soil and rock above the ore), or for deep and sloping deposits. General Process

If an area’s open pit mines are exhausted or impossible to build due to the inaccessibility of the desired resources, the mining process goes underground. There are several different ways to mine underground.

Underground Mining. Underground mining has the potential for tunnel collapses and land subsidence (Betournay, 2011). It involves large-scale movements of waste rock and vegetation, similar to open pit mining. Additionally, like most traditional forms of mining, underground mining can release toxic compounds into the air and water.

But truth is that with the advancement of technology, machinery and rock mechanics, nowadays, Coal mines are mostly Open -Pit Type (Surface mines). But Underground coal mines also exist in large numbers but due to heavy mechanisation, the method of working and working conditions have changed extremely. An surface coal mine:

Mining and beneficiation techniques are important: underground mining, a noted above, creates much smaller volumes of waste per unit of metal than does surface mining, and the higher the recovery rate during beneficiation, the smaller the amount of tailings created.

Safety, while always a concern, is even more important for underground mines. Surface mining, or open pits, are for shallower minerals. Visually, these look like quarries and therefore have a bigger visual impact that underground mines. However, they are usually a lot cheaper to develop than an underground operation.

“Once a mine is in operation water protection must remain the highest goal of the company, even if it means reduced mineral productivity. Adopting this common-sense ethic is the only way we can ensure that the golden dreams of mining do not turn into the nightmare of poisoned streams.” (Carlos De Rosa & James Lyon, Golden Dreams, Poisoned Streams.

Your Answer

We've handpicked 20 related questions for you, similar to «Why would a mining company choose to do a surface mine why would it choose to do an underground mine?» so you can surely find the answer!

Why is underground mining more risky than surface mining?

Underground mining has the potential for tunnel collapses and land subsidence (Betournay, 2011). It involves large-scale movements of waste rock and vegetation, similar to open pit mining. Additionally, like most traditional forms of mining, underground mining can release toxic compounds into the air and water.

Read more

Is coal mining a surface or underground movement?

Coal extraction methods vary depending on whether the mine is an underground mine or a surface (also called open cast) mine. Additionally, coal seam thickness and geology are factors in the selection of a mining method. The most economical method of coal extraction for surface mines is the electric shovel or drag line.

Read more

Is coal mining a surface or underground plant?

Coal can be extracted from the earth either by surface mining or underground mining. Once coal has been extracted, it can be used directly (for heating and industrial processes) or to fuel power plants for electricity.

Read more

Is coal mining a surface or underground system?

When coal seams are near the surface, it may be economical to extract the coal using open cut (also referred to as open cast, open pit, mountaintop removal or strip) mining methods. Opencast coal mining recovers a greater proportion of the coal deposit than underground methods, as more of the coal seams in the strata may be exploited.

Read more

Is coal mining a surface or underground technology?

Coal mining is the process of extracting coal from the ground. Coal is valued for its energy content and since the 1880s has been widely used to generate electricity. Steel and cement industries use coal as a fuel for extraction of iron from iron ore and for cement production. In the United Kingdom and South Africa, a coal mine and its structures are a colliery, a coal mine is called a 'pit ...

Read more

What's the difference between surface and underground mining?

  • Underground Mining. Main Difference. In surface mining, the ore is accessed directly from the Earth's surface, and contact is maintained with the surface throughout the operation. Underground or subsurface mining is accomplished with the help of tunnels going into the Earth, and does not occur on the surface.

Read more

Which is more expensive underground or surface 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. Placer mining is used to sift out valuable metals from sediments in river channels, beach sands, or other environments.

Read more

What is a subgroup of surface mining and underground mining?

Surface mining is suitable for large, low-grade ore deposits which occur below a thin layer of rock, or alluvial deposits found in sand and riverbeds. Underground mining is used for small, high-grade deposits covered with a thick overburden (soil and rock above the ore), or for deep and sloping deposits. General Process

Read more

Why is surface mining cheaper than underground mining in california?

Underground mining is generally more expensive than surface mining. Cash mining cost for higher-ranked coal at Appalachia Basins is much higher at above $60/short tons, based on Alpha Natural ...

Read more

Why is surface mining cheaper than underground mining in colorado?

Underground mining is more expensive because it’s more capital intensive. Coal companies have to drill more, and use more expensive and complicated machines.

Read more

Why is surface mining cheaper than underground mining in india?

Underground mining is generally more expensive than surface mining. Cash mining cost for higher-ranked coal at Appalachia Basins is much higher at above $60/short tons, based on Alpha Natural ...

Read more

Why is surface mining cheaper than underground mining in maine?

Why Surface Mine? By Gene Kitts, Senior Vice President-Mining Services, International Coal Group, Inc. Why do we surface mine in Central Appalachia? It’s certainly not because we like the public attention and we really don’t enjoy the struggles with regulatory agencies, the years of permitting delays and the seemingly endless litigation.

Read more

Why is surface mining cheaper than underground mining in pennsylvania?

Underground mining is generally more expensive than surface mining. Cash mining cost for higher-ranked coal at Appalachia Basins is much higher at above $60/short tons, based on Alpha Natural ...

Read more

Why is surface mining cheaper than underground mining in virginia?

Underground mining is generally more expensive than surface mining. Cash mining cost for higher-ranked coal at Appalachia Basins is much higher at above $60/short tons, based on Alpha Natural ...

Read more

What do you mine in surface mining?

"Strip mining" is the practice of mining a seam of mineral, by first removing a long strip of overlying soil and rock (the overburden); this activity is also referred to as "overburden removal".It is most commonly used to mine coal and lignite (brown coal).Strip mining is only practical when the ore body to be excavated is relatively near the surface.

Read more

Is surface or underground mining better for the environment?

There has been greater stress on surface mining for boosting the production in our country, which has a larger environmental footprint compared to underground mining. As the deposits near the surface are exhausted underground mining may become cost competitive.

Read more

What are the differences between surface and underground mining?

Surface mining is suitable for large, low-grade ore deposits which occur below a thin layer of rock, or alluvial deposits found in sand and riverbeds. Underground mining is used for small, high-grade deposits covered with a thick overburden (soil and rock above the ore), or for deep and sloping deposits. General Process

Read more

What is the difference between surface and underground mining?

Surface mining is suitable for large, low-grade ore deposits which occur below a thin layer of rock, or alluvial deposits found in sand and riverbeds. Underground mining is used for small, high-grade deposits covered with a thick overburden (soil and rock above the ore), or for deep and sloping deposits. General Process

Read more

What is the difference between underground and surface mining?

Surface mining is suitable for large, low-grade ore deposits which occur below a thin layer of rock, or alluvial deposits found in sand and riverbeds. Underground mining is used for small, high-grade deposits covered with a thick overburden (soil and rock above the ore), or for deep and sloping deposits. General Process

Read more

Why is surface mining cheaper than underground mining in the philippines?

Underground mining is generally more expensive than surface mining. Cash mining cost for higher-ranked coal at Appalachia Basins is much higher at above $60/short tons, based on Alpha Natural ...

Read more