underground mining through open pit

Popular Searches

  • NUMERICAL MODELING OF OPEN PIT OP TO ,

    Numerical modeling of open pit OP to underground UG transition in coal mining 37 In recent years, with the development of computer science, numerical methods become more and more popular in solving problems of geo-engineering They prove particularly useful when their results are used for comparison with the results of observations under...

    Know More

  • Gold Mining from Open Pit Extraction to Heap Leaching ,

    Jul 08, 2016 0183 32 Gold Mining from Open Pit Extraction to Heap Leaching - Educational 3D Animated Video For more information and to request a FREE estimate, contact us today ....

    Know More

  • OPEN PIT MINING THROUGH UNDERGROUND WORKINGS

    OPEN PIT MINING THROUGH UNDERGROUND WORKINGS 20 LEGISLATIVE REQUIREMENTS WA The Mines Safety and Inspection Regulations 1995 includes a provision Regulation 138 relating to surface mining operations where mining is being conducted through or in...

    Know More

  • Blog Mine Dewatering

    May 22, 2014 0183 32 Mine dewatering techniqu Dewatering and groundwater control is an important part of many open pit and underground min Effective dewatering is a pre-requisite for safe and efficient mining Poorly controlled groundwater will waste money, slow down mining and potentially cause adverse environmental impacts However, techniques are available to successful control groundwater...

    Know More

  • Underground Mining

    The truth of the matter is that more often than not, open pit mining and underground mining go hand-in-hand When open pit mining, the most geomorphic intrusive mining method, is no longer cost effective, underground mining takes over where possible However, the damage has been done to the surface of the land...

    Know More

  • The Advantages of Open Pit Mining Sciencing

    Mar 13, 2018 0183 32 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 ....

    Know More

  • Determining the open pit to underground transition A new ,

    unnamed mine has an existing underground mine and is contemplating an open pit expansion that could mine material that would otherwise be mined in a future underground expansion These authors were able to compare a number of different transition scenarios, each with optimised schedules and cut-offs...

    Know More

  • Open Pit Open Cast Mining

    Open pit, or open cast, mines excavate ore from the surface creating a hole in ground Open pit mining is generally less expensive than underground mining Whether or not a deposit can be open pit mined will depend on the shape and depth of the ore deposit The main issue for an open pit mine ,...

    Know More

  • Differences between underground mining and open pit mining ,

    Apr 02, 2018 0183 32 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...

    Know More

  • TRANSITION FROM OPEN

    open-pit method, and if it proves to greater depths the open-pit mine will economically transfer to a suitable underground mining method On the other hand, it is essential to exploit the ore ....

    Know More

  • Underground mining to erode Philex returns Philstar

    Oct 07, 2019 0183 32 I think their plan is to do first the ore bodies that are really deep and can be done by underground and then the shallow parts will be done last through open pit eventually, he added...

    Know More

  • Transition from Open Pit to Underground Mine

    Transition from open pit to underground mining often risks mud rushes if mud forming minerals are present , and from sumps and surface dams Air blasts can result from underground collapses or mud rush The presence of an abandoned pit above can lead to greater risks of dilution and mud rush...

    Know More

  • Environmental Risks of Mining

    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...

    Know More

  • A stochastic optimization formulation for the transition ,

    Jul 11, 2017 0183 32 As open pit mining of a mineral deposit deepens, the cost of extraction may increase up to a threshold where transitioning to mining through underground methods is more profitable This paper provides an approach to determine an optimal depth at which a mine should transition from open pit to underground mining, based on managing technical risk...

    Know More

  • Optimization of the transition from open

    open-pit and underground block values Bakhtavar, 2009 In order to mathematical model the transition problem some of the following assumptions have been considered The problem should be modelled on the basis of maximization of the overall profit achieved through open-pit and underground mining...

    Know More

  • Radioactive Waste From Uranium Mining and Milling ,

    Mining When uranium is near the surface, miners dig the rock out of open pits Open pit mining strips away the topsoil and rock that lie above the uranium ore When uranium is found deep underground, miners must dig underground mines to reach it The rock is then removed through underground tunnels...

    Know More

  • Open Pit to Underground Transition

    underground mining cost would be equivalent The table below details some assumptions to illustrate this method When the pit reaches a depth where the stripping ratio t w t o is 1171 the mining cost for surface and underground is equal Stripping Ratio Underground Mining Cost UG USD total /t ore 4500 Open Pit Mining Cost Ore USD/t ore 400...

    Know More

  • The Mining Life Open Pit vs Underground

    Aug 22, 2017 0183 32 Underground operations usually cause many more difficulties than normally occur in open pit mines, but without constant supervision and strong safeguards, either type of mine can be dangerous for workers Open pit and underground mines are often in remote locations that require miners to work and live on mining camps for long periods of time ....

    Know More

  • Underground Mine Backfilling in Australia Using Paste ,

    Open pit Fig 1 a and underground mining Fig 1 b are two different ways of mining to recover shallow and deep ore bodies, respectively The discussions in this paper are limited to backfilling underground mines, which are located from hundreds to thousands of metres below the ground level that are accessed through ramps, shafts and tunnels...

    Know More

  • Digging deeper Mining methods explained Anglo American

    Open-pit, underground and underwater These are the three main methods of mining we use at Anglo American to extract our products from the ground In this Digging Deeper article, we take a look at these different methods and provide a glimpse into what each involv...

    Know More

  • What is one environmental advantage that underground ,

    Aug 05, 2017 0183 32 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....

    Know More

  • Open Pit Transition Depth Determination through Global ,

    The determination of transition depth from open pit to underground mining is based on global production scheduling optimisation of open pit and underground mines using mixed integer linear programming The method is applied to a case study coming from a gold mining complex with six open pits and a large underground mine using longhole open stoping...

    Know More

  • 2 Mining Methods

    Open pit mining is a technique used to extract copper ore near the earth s surface Open pit mining is the most widely used technique of mining copper today It is accomplished by creating and using benches or terraces to gradually reach deeper under the earth s surface Underground mining is used when the copper ore is not near the earth s ....

    Know More

  • Use of an artificial crown pillar in transition from open ,

    This function of the crown pillar is essential to the long-term stability of the open pit slopes and the underground mining infrastructure Therefore, the crown pillar is of great significance to the safe transition from open pit to underground mining, 6 and for the safety of surface infrastructure during mining and after closure of a mine...

    Know More

  • Surface Mining Methods and Equipment

    Open Pit vs Underground Mining Methods , Surface Mining Methods and Equipment - J Yamatomi and S Okubo , He obtained his PhD through study at the mining engineering department of the University of Tokyo He also worked for the Mining College, Akita University, for seven years, and duri ng that time took study leave at th e Department of ....

    Know More

  • North East Openpit mining over West old workings

    submitted for their mine site THE HAZARDS Old and current underground mine workings beneath openpit mining operations may include large stope voids and an extensive network of tunnels that pose a ground collapse potential Voids may have been previously mined close to the new pit floor, leaving only a small pillar that has fretted away over time....

    Know More

  • Mining Sites The Transition from Open

    Jul 10, 2019 0183 32 While both underground and open-pit mining are widely accepted mining processes, there is a greater inclination to further expand underground mining This transition from open-pit to underground begins when open-pit mines are exhausted or inaccessible meaning, they have either been depleted of minerals, rocks, and resources, or they are ....

    Know More

  • UNDERGROUND WORKINGS DETECTION AT THE FIMISTON ,

    Fimiston Open Pit is now mining through a dense network of underground development workings with open and filled stopes of varying siz Figure 1 is a photo taken from the pit showing some open and filled stopes intersecting with pit slope Figure 1 Open and filled stopes intersecting with pit slope the batter is 20 m high...

    Know More

  • Most Amazing Open

    Dec 17, 2013 0183 32 Most Amazing Open-pit Mines in The World diamonds, gold, silver, copper, igeoNews , which planned to halt open-pit mining in favor of underground mining in 2010 , It is majority owned ....

    Know More

  • Risk Management Strategies for Open Pit Mining Through ,

    The gold mine in this case study has been mined using both underground and open pit mining methods since its commencement in the 1970 s The current active open pit excavates through ,...

    Know More