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Why Are Open Pit Mines Used Instead Of Underground Mines

When shaft mining was the most common method of ore extraction thousands died in caveins gas events and accidents involving equipment In 1907 alone more than 3200 deaths related to mining occurred Get price why are open pit mines used instead of underground mines why are open pit mines used instead of underground mines

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  • Jaw crusher
    Open Pit Mining Mining Artifacts

    Open Pit Mining Openpit mining also known as opencast mining and opencut mining refers to a method of extracting rock or minerals from the earth by their removal from an open pit or barrow The term is used to differentiate this form of mining from extractive methods that require tunneling into the

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  • Jaw crusher
    Huge Holes In The Earth OpenPit Mines Seen From Sp

    The open pit is 25 miles wide and there is extensive underground mining in the area as well Glaciers are also visible in the image This photograph was taken June 25 2005 by astronauts on the

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  • Jaw crusher
    Rmining Strip Mining Vs Open Pit Mining

    Strip Mining vs Open pit mining Then you either close down the mine or move the operation underground From what I gather strip mining is used to take things like coal deposits that are closer to the surface where open pit you are removing a spefic rock from the ground View entire discussion 3

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  • Jaw crusher
    How Does Openpit Mining Affect The Environment In

    May 30 2012Best Answer Everything in life is a trade off Its true that open pit mining can and often does have a negative impact on the environment However everything we use either has to be grown or mined Take a look around the room you are sitting in Virtually everything you see has e about because of mining

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  • Jaw crusher
    Open Pit Chromite Mining Equipment

    open pit chromite mining equipment Our Purpose And Belief LM Heavy Industry is mitted to provide the global customers with the firstclass products and superior service striving to maximize and optimize the interests and values of the customers and build bright future with high quality

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  • Jaw crusher
    The Mine Next Door Flathead Beacon

    Oct 02 2019For decades most of the mines in the Elk Valley were underground but in the 1960s strip mining also known as openpit mining came to the region Instead of burrowing underground

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  • Jaw crusher
    Mining Surface Mining

    Openpit mining Pit geometry Deposits mined by openpit techniques are generally divided into horizontal layers called benches The thickness that is the height of the benches depends on the type of deposit the mineral being mined and the equipment being used for large mines it is on the order of 12 to 15 metres about 40 to 50 feet

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  • Jaw crusher
    he Worlds Deepest Biggest And Deadliest Open Pit

    In this article we will take you to some gigantic manmade holes open pit mines Well show you the biggest deepest and deadliest mines in the world Most of

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  • Jaw crusher
    List Of Openpit Mines Wikipedia

    The Palabora Open Pit mechanically excavated by Palabora Mining Company in Phalaborwa Limpopo Province The pit is 898m deep and 1846m across on top Voorspoed diamond mine Spain Corta Atalaya the largest openpit mine in Europe and was at one time the largest in the world Sierra Menera Sistema Ibrico

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  • Jaw crusher
    INTERNATIONAL JOURNAL OF SCIENTIFIC

    curse in that open pit and underground mining operations are susceptible to flooding with injuries to personnel and loss of life as well as property damage On balance uncontrolled water constrains mining production in open pits and underground mines So everywhere where mining is

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  • Jaw crusher
    Underground Copper Mine Process

    Tyrone Mine is an openpit copper mining plex Processes and facilities Tyrones copper processing facilities consist of a solution 1909 to 1916 and began concentrating ore produced from largescale underground mining in 1916

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  • Jaw crusher
    Why Is An Open Pit Mine Generally Safer And Cheape

    Oct 07 2009Answers The worst that can happen in an open pit is a landslide A mine shaft is in effect a closed space even though one side is open the shaft entrance The mine shaft has no natural ventilation so the deeper it goes the more it needs forced air ventilation either through a tube extending in from the entrance or from a separate shaft up to

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  • Jaw crusher
    Why Is Open Pit Mining Important Yahoo Answers

    Jan 24 2016Open pit mines can be used in coal mining and they are used extensively in hard rock mining for ores such as metal ores copper gold iron aluminum and many minerals In a open pit coal mine the pit bottom would be the bottom mined coal seam elevation since it is usually feasible to extract multiple seams when surface mining coal

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  • Jaw crusher
    PHOTOS Top 10 Largest Open Pit Mines In The World

    Openpit mining is one of the most monly used techniques to extract minerals from the Earth The process which is also known as opencast miningopencut miningand strip miningis used when deposits are located close to the surface and entails digging or blasting from the ground level to extract ore Related content INFOGRAPHIC Top 10 largest diamonds ever

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  • Jaw crusher
    Effective Factors Investigation In Choice Between

    As well as before beginning a detailed economic analysis of the factors which enter into deciding whether to mine by openpit or underground mining and what point a change should be made from openpit to underground mining it is necessary to consider some general factors 2

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  • Jaw crusher
    Mining Of Iron Ores IspatGuru

    The most predominant surface mining methods used for mining of iron ores are open pit mining methods and open cut mining methods However a few underground iron ore mines are also in operation around the globe The decision for employing surface mining or underground mining is dependent on the proximity of the ore body to the surface Open pit and open cut mining are the least expensive

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  • Jaw crusher
    Top 10 Deep Openpit Mines Mining Technology

    Sep 26 2013The deepest open pit mines are scattered geographically across the world unlike the deepest underground mines which are mostly concentrated in South Africa The majority of the deepest open pit operations in the world are copper producing mines Miningtechnology profiles the worlds top ten deepest open pit mines currently active

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  • Jaw crusher
    Geotechnical Considerations For The Stability Of O

    This paper presents examples of several scenarios in which pit slope stability assessment may be required at mine closure These are focused specifically on the longterm stability of the open pit excavations not the stability of any adjacent structures The paper does not attempt to propose a set of guidelines but discusses techniques that may be used for assessment under various scenarios

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  • Jaw crusher
    Basics Of An Open Pit Mine

    Open pit mines can be used in coal mining and they are used extensively in hard rock mining for ores such as metal ores copper gold iron aluminum and many minerals In a open pit coal mine the pit bottom would be the bottom mined coal seam elevation since it is usually feasible to extract multiple seams when surface mining coal

    more
  • Jaw crusher
    ypes Of Australian Mine Open Pit Or Underground M

    Its the method of choice when the materials being mined are far beneath the surfaceand when it isnt economical to use the open pit method Underground mines in Australia There are fewer underground mines in Australia than there are open pit mines but there are still quite a number The following is just a small sample

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  • Jaw crusher
    Open Pit Mining TechniquesSurface MinesRock Or Min

    Openpit mines are used when deposits of mercially helpful minerals or rock are found close to the surface that is where the overburden layer material covering the valuable deposit is paratively thin or the material of interest is structurally inappropriate for tunneling For minerals that happen deep underneath the surfacewhere

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  • Jaw crusher
    Environmental Risks Of Mining

    Underground Mining Underground mining has the potential for tunnel collapses and land subsidence Betournay 2011 It involves largescale movements of waste rock and vegetation similar to open pit mining Additionally like most traditional forms of mining underground mining can release toxic pounds into the air and water

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  • Jaw crusher
    MINING EQUIPMENT NAMES Underground And Open Pit

    What is open pit mining Open pit mining is the most mon mining technology when it es to new mines In this technique the soil is excavated and the mineral separation and the remaining soil material occurs on the surface The first step in this process is

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  • Jaw crusher
    Openpit Mining

    Openpit mining methods can be employed where thick deposits occur near the surface Earthmoving equipment is used to strip and stockpile the topsoil remove and dispose of the overburden and excavate the tar sand Surface mining method of extracting minerals near the surface of the Earth

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  • Jaw crusher
    Openpit Mining Is Safest Method Of MiningTHE

    Oct 20 2011Barcelon has relayed his opinion to the South Cotabato provincial government to explain why openpit mining is a safe practice Tunneling is very risky in terms of safety of the workers and the method has an environmental impact that cannot be easily seen since it is undergroundsaid Barcelon

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  • Jaw crusher
    Openpit Mining Wikipedia

    Openpit opencast or open cut mining is a surface mining technique of extracting rock or minerals from the earth by their removal from an open pit or borrow This form of mining differs from extractive methods that require tunnelling into the earth such as long wall mining Openpit mines are used when deposits of mercially useful ore or rocks are found near the surface

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  • Jaw crusher
    Open Cut Or Underground Mining Which Is Better

    Oct 21 2017Opencut mining Opencut gets its name because thats exactly what this type of mining looks like a big open pit This type of mining allows for the extraction of minerals that arent very far under the surface The process keeps the activity from going deep underground This has many advantages Yet its only viable when the materials are reachable after removing only a small layer from the

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  • Jaw crusher
    Open Cut And Underground Mining IMINCO

    Underground Mining Underground Mining is generally used for areas where the mineral seam is too far underground for open cut mining to be of use A tunnel called a decline is created to allow workers and machinery to reach the location of the minerals Stope mining is used for most hard rock mining of minerals such as copper silver lead and zinc

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  • Jaw crusher
    What Impact Does Open Pit Mining Have On The

    Aug 29 2016Open Pit mining of all mining practices is normally targeted because it is the most visible least socially acceptable and the processing generates the largest amounts of waste waste was and is the material already there However Open Pit mines are generally in areas not visible unless intentional and areas not usable by the general population

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