open pit vs closed pit mining

  • What is the difference between an open cast mine and an

    Oct 15 2017· Open pit open cast 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 Open pit Reclamation after completion Open cast Reclamation during mining open pit ge

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  • Pit Wall Angles and Bench Width How Do They Relate?

    May 10 2015· The wall of an open pit wall will consist of a series of stacked benches Geotechnical engineers will normally provide the pit slope design criteria based on the inter ramp angle (IRA) for various sectors around the pit The IRA represents the toe to toe slope angle as shown in the diagram below The inter ramp angle can be

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  • open Open Pit Mining Methods Open pit mining methods are applicable to mining ore deposits that apex at or near the surface If the deposit apexes below the surface the overburden and barren capping overlying the ore must be removed in advance of open pit mining

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  • Types of Australian mine Open Pit or Underground Mine

    With both open pit and underground mining the work can be hard and the hours long and you can be rostered on for many days at a time That said it can be rewarding in ways that are more than just financialand the money is great! If you have any questions on either open pit or underground mining jobs in Australiaor bothsimply fill in

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  • HullRustMahoning Open Pit Iron Mine

    The HullRustMahoning Open Pit Iron Mine in Hibbing Minnesota United States is the largest operating open pit iron mine in Minnesota The pit stretches more than three miles (5 km) long two miles (3 km) wide and 535 feet (163 m) deep It was established in 1895 and was also one of the world's first open pit mines

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  • Open

    Open pit definition noting or pertaining to a type of surface mining in which massive usually metallic mineral deposits are removed by cutting benches in the walls of a

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  • Vertical Pit Mining An Alternative to Open Pit Mining for

    11th International Kimberlite Conference Extended Abstract No 11IKC 4686 2017pdf Vertical Pit Mining An Alternative to Open Pit Mining for Massive/Shallow Orebodies P J Terbrugge1 R Armstrong1 1SRK Consulting (South Africa) Introduction The concept of vertical pit mining has developed as an alternative mining method for the exploitation

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  • Open

    Open pit definition noting or pertaining to a type of surface mining in which massive usually metallic mineral deposits are removed by cutting benches in the walls of a broad deep funnel shaped excavation See more

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  • open pit vs underground copper mining

    Open Pit Mining vs Underground Mining Gold Prospecting Forum Nugget One of the factors in determining whether a corporation will use underground vs open pit mining is the type of ore body containing the ore and the quality of the ore in the bodyIf the gold/silver/copper is actually in its native free milling state in the ore body such as in hydrothermal quartz veins

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  • Open Pit Vs Closed Pit Mining cz eueu

    Open Pit Vs Closed Pit Mining Open Pit or Open Cast Mining ONE Nevada Open Pit or Open Cast Mining Red Watson a Comstock artist depicted a future ia City isolated by extensive open pit mining and no reclamation Get Price And Support Online; Duterte plans to shut down open pit mining

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  • What is the difference between strip and open pit mining

    Jun 13 2019· Geometry Strip mines form a strip or lateral cut along the terrain like a big ditch or trench from which the material of interest (typically in strip mines coal) is removed sequentially along the trench and then the former covering materi

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  • Surface Mining Methods and Equipment

    UNESCO EOLSS SAMPLE CHAPTERS CIVIL ENGINEERING Vol II Surface Mining Methods and Equipment J Yamatomi and S Okubo ©Encyclopedia of Life Support Systems (EOLSS) Figure 2 Change in production and productivity of US coal mines The higher productivity for open pit mining equipment also lowers costs

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  • Open pit mining General Overview Protect Ecuador

    Open pit mining (also known as open cut mining or opencast mining) is a type of strip mining in which the ore deposit extends very deep in the ground necessitating the removal of layer upon layer of overburden and ore

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  • Open Pit Mine Planning and Design Third Edition ~ Mining

    Open Pit Mine Planning and Design is an excellent textbook for courses in surface mine design open pit design geological and excavation engineering and in advanced open pit mine planning and design The principles described apply worldwide In addition the work can be used as a practical reference by professionals

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  • What is one environmental advantage that underground

    Aug 05 2017· Both types of mining underground and open pit pose severe environmental impacts Similar problems can be identified for both methods but the amount of severity can be different Open pit mining being carried out on the surface directly impact t

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  • Types of Australian mine Open Pit or Underground Mine

    With both open pit and underground mining the work can be hard and the hours long and you can be rostered on for many days at a time That said it can be rewarding in ways that are more than just financialand the money is great! If you have any questions on either open pit or underground mining jobs in Australiaor bothsimply fill in

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  • How coal is extracted from an open pit mine

    Jun 15 2017· Follow the journey of coal from the point of extraction to being transported and loaded onto barges ready to set sail to coal importing countries

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  • What is the difference between an opencast mine and an

    Sep 06 2006· What is the difference between an opencast mine and an open pit mine? Open pit is when it's actually smaller tunnels and eventhough trucks or rail carts can sometimes go in there it's always underground (Look up Johannesburg gold mine shafts also one of the deepest in the world) Open pit mine is deep and laterally large Like Gran

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  • Mathematical Optimization Models and Methods for Open

    Mathematical Optimization Models and Methods for Open Pit Mining Doctoral dissertation ISBN 978 91 7393 073 4 ISSN 0345 7524 Open pit mining is an operation in which blocks from the ground are dug to extract the ore contained in them and in this process a deeper and deeper pit is formed until the min

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  • Mathematical Optimization Models and Methods for Open

    Mathematical Optimization Models and Methods for Open Pit Mining Doctoral dissertation ISBN 978 91 7393 073 4 ISSN 0345 7524 Open pit mining is an operation in which blocks from the ground are dug to extract the ore contained in them and in this process a deeper and deeper pit

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  • Open Pit Coal Mine

    Mar 30 2011· Open Pit Coal Mine Stellarton NS This feature is not available right now Please try again later

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  • What is the difference between strip mining and open pit

    1Depth:strip mining is done for <60 m while open pit is done for60 to near about 120 m 2Design:Strip mining is done maintaining spoil piles system while open pit has a specific mining

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  • Open pit mining

    Open pit open cast 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 miningOpen pit mines are used when deposits of commercially useful ore or rocks are found near the surface

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  • Mining Underway at Baloo Open Pit Mine Yahoo

    Aug 23 2019· US Markets closed SP 500 3 14591 +2848 (+091% an excellent grade for a shallow open pit mine The Baloo Stage I open pit is the first of a series of open

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  • Open Pit The Secret Sauce of BBQ Pit Masters

    The Open Pit ® Heritage Our heritage rests in traditions passed down through generations of families that use Open Pit for their backyard BBQs Open Pit boasts a unique blend of spices and tang perfect right out of the bottle or for adding your own favorite special ingredients so youre always the boss of your secret BBQ sauce recipe

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  • Open Pit Mining Methods

    Open pit mining methods are applicable to mining ore deposits that apex at or near the surface If the deposit apexes below the surface the overburden and barren capping overlying the ore must be removed in advance of open pit mining The removal of this material is known as stripping

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  • Advantages and disadvantages of open pit mining ~ LORECENTRAL

    Apr 02 2018· Advantages and disadvantages of open pit mining 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

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  • Strip Mining vs Open pit mining mining

    Eventually you will have to remove so much overburden that extraction no longer is profitable Then you either close down the mine or move the operation underground Since the mining operation stays in one place you won't get started on the reclamation until the open pit is closed

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  • Open Pit Mining Pros Cons Sciencing

    Open pit mining or strip mining is an extraction process for ore or fossil fuels that takes place at the surface of a mining site Worldwide 40 percent of mining occurs at the surface according to Greenpeace International Compared with underground mining surface mining is much more efficient

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  • Open Pit Mining TechniquesSurface MinesRock or Mineral

    Open pit Mining Open pit mining also known as opencast mining open cut mining and strip mining means a process of digging out rock or minerals from the earth by their elimination from an open pit or borrow The word is used to distinguish this type of mining from extractive methods that need tunneling into the earth

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  • Underground versus Open Pit Mining Firwin Corp's Blog

    Underground versus Open Pit Mining If you scan any news source these days you will find countless stories about the worlds unquenchable desire for mineable resources like oil coal and precious metals Recently Firwin has begun to extend its reach into the ever growing world of mining With this in mind we thought this would be the

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  • Berkeley Pit an Abandoned Hazardous Mine Abandoned

    Apr 19 2017· The open pit copper mine of Berkeley in Butte Montana is filled with heavy metals and dangerous chemicals is about 54m deep over 15km long and has caustically acidic water This once thriving copper mine is now an abandoned scar on the surface of the earth The mine was opened in 1955 and was operated by

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  • What is an open pit mine? Socratic

    Mar 15 2018· An open pit mine is a method of mining usually for metallic ores in which the waste and ore are completely removed from the sides and bottom of a pit

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  • Basics of an open pit mine Mine EngineerCom

    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

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  • Differences between underground mining and open pit mining

    Apr 02 2018· 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 What is open pit mining On the other hand open pit mining is the most common mining and ranges from very low priced minerals to finely disseminated gold deposits

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  • what is the difference between an open pit mine a quarry

    The difference between an open pit mine and a quarry is that a quarry uses the mined product as is without milling and extraction such as limestone gypsum bentonite gravel etc A mine usually refers to metals like gold or copper being recovered from ore once it has been mined

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  • Open Pit Mining Mineral Processing Metallurgy

    The Pit stretches 38 kilometers by 135 kilometers wide at the surface And it goes down to a depth of 500 meters Another example of very large open pit is given by these images taken from the Highland Valley copper mine in central British Columbia in Canada In model 1 we learn that the metalliferous surface mine the slopes are referred as

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  • Open pit mining Britannica

    mining Open pit mining Deposits mined by open pit 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

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  • Open Pit Vs Closed Pit Mining Global Specialized Mining

    Open Pit Vs Closed Pit Mining Mar 13 2018 open pit mining does offer some advantages over traditional deep shaft mining pit mining is more cost effective than shaft mining because more ore can be extracted and more quickly the working conditions are safer for the miners because there is no risk of cave in or toxic gas open pit mining is the preferred

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  • Top 10 deep open pit mines Mining Technology

    Sep 26 2013· The 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 Mining technology profiles the

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  • Short Term Planning for Open Pit Mines A Review

    An open pit mine consists of a set of pits in which horizontal layers of material (benches) are extracted from the top down Open pit mining is suitable for orebodies located close to the surface with underground mining techniques typically applied where this is not the case Metal ores including iron copper and gold

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  • The Mining Life Open Pit vs Underground MICROMINE

    Aug 22 2017· The Mining Life Open Pit vs Underground August 22 2017 The mining life is not for everyone Miners work long hours often far from home in one of the most physically demanding positions out there While its up to the executives the managers and the other stakeholders to install the best designs for an underground or open pit mine

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  • Tailingsinfo In pit tailings storage

    In pit tailings storage as the name suggests is simply the process of backfilling abandoned open pit surface mines with tailings (figure 1) This method is very attractive to a mine operator as worked out voids can be filled at a fraction of the costs associated with designing constructing and operating a conventional thickened paste or

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  • Open Pit Mining Methods

    Dec 10 2010· Mining is a practical industry that seeks efficient ways to extracts mineral wealth from the ground During the nineteenth century precious metals deeper than about three hundred feet called for underground drift or hardrock mining Occasionally ore bodies sufficiently close to the surface made open pit or open cast mining practical

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  • Advantages and disadvantages of open pit mining ~ LORECENTRAL

    Apr 02 2018· Advantages and disadvantages of open pit mining 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

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  • Blasting

    Oct 23 2018· After mining Utilization of mining area; Reclamation remediation rehabilitation; Land use land fill etc Pit geometry Open pit Simple basic geometry; Open to the atmosphere; Cone like shape; Slope angle by rock characteristics

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  • A deeper look Ontario Nature

    Open Pit vs Underground Mining Mines in Ontario are either open pit or underground depending on the type of ore and its location Open pit mining is generally used for large low grade mineral deposits that are close to the surface while under ground mining is generally used for

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  • How to profit from low grade gold mines

    Dec 23 2018· Open pit mining is either done with a fleet of haul trucks (some now automated) or an in pit crushing and conveying system (IPCC) Underground mines are accessed via a shaft or ramp Miners

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  • Open pit mining Britannica

    mining Open pit mining Deposits mined by open pit 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

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  • The Advantages of Open Pit Mining Sciencing

    Mar 13 2018· Open pit mining does offer some advantages over traditional deep shaft mining Pit mining is more cost effective than shaft mining because more ore can be extracted and more quickly The working conditions are safer for the miners because there is no risk of cave in or toxic gas Open pit mining is the preferred

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