open pit mining consequences

open pit mining consequences

Environmental Consequences of Open Pit Mining

2012-3-14  Loss of a landscape that has meaning for people as a result of open pit mining and the resulting environmental degradation causes mental anguish and suffering that is largely or even entirely discounted or denied by mine operators but is nevertheless real.

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Environmental Risks of Mining

2012-12-11  Open pit mining, where material is excavated from an open pit, is one of the most common forms of mining for strategic minerals. This type of mining is particularly damaging to the environment because strategic minerals are often only available in

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Risk Management Geomechanics Application for Open

2019-12-21  Consequences of an open pit slope failure can have significant safety and/or economic impacts, and hence the slope designs can form a significant part of the risk assessment for an open pit mine. This document presents an overview of risk management applied to open pit mining operations, with particular focus on

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Advantages and disadvantages of open pit mining

2021-7-12  Disadvantages of open pit mining One of the main disadvantages of this type of mining operation is the environmental impact it causes. Since cyanide, mercury and sulfuric acid are used to remove the wastewater, groundwater and air are contaminated as

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Open-Pit Coal Mines: Implications for Green Mining

2021-5-7  is produced in all stages of open-pit operations, such as exploration, stripping, drilling, blasting, exploitation, transportation, crushing, and disposal [22,23]. Therefore, open-pit mining is known to be one of the main sources of particulate matter (PM) of different sizes [17,24]. Among other sources of pollution in mining regions, PM

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The Potential Negative Effects Of Mining On The

2018-9-28  Strip mining, underground mining, open pit mining, heap leaching, and brine mining might all be more environmentally damaging forms of mining Strip Mining [and underground mining might both have] extensive environmental impact environment.co.za Open pit and underground mining

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GEOTECHNICAL CONSIDERATIONS IN OPEN PIT MINES

2021-7-13  open pit excavations will endeavour to prevent hazardous and unexpected failures of the rock mass* during the operating life* of the open pit. The importance of a systematic approach to mine planning and design using soundly based geotechnical engineering methods cannot be over-emphasised. Open pit mines can

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Analysis of a slope failure in an open pit mine using

However if this slope failure was used to back calculate material properties using the 2D slope case, and those conservative properties were then used in multiple forward calculations, then there may be significant economic consequences for an open pit mining

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Societal Impacts of Large Scale Mining Open-pit

2012-12-29  According to the Observatory of Mining Conflicts in Latin America (OCMAL) there are currently 120 active conflicts involving more than 150 affected communities throughout the region. Mining is, of course, all about money. The Mirador Open Pit Copper Mine is owned by China. At present Ecuador owes China some $8 billion, which is 19% of Ecuador

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Reading: Effects of Mining Geology

Open-Pit Mining. Figure 1. Opencut coal mine loadout station and reclaimed land at the North Antelope Rochelle coal mine in Wyoming, United States. After mining finishes, the mine area must undergo rehabilitation. Waste dumps are contoured to flatten them out, to further stabilise them. If the ore contains sulfides it is usually covered with a

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Negative pH, efflorescent mineralogy, and consequences

Flat Open Pit Mine, Mattie Mine, Richmond and Richmond Extension Mines, and Hornet Mine. Ag, Au, Cu, Fe, Zn, and pyrite (for sulfuric acid production) were recovered at various times beginning in the early 1860s and ended with the termi-nation of open-pit mining in 1962. Iron Mountain was once the

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Addressing the issues on open-pit mining

Last October, the Mining Industry Coordinating Council (MICC), recommended the lifting of the open-pit mining ban instituted by former DENR secretary Gina Lopez through DENR Administrative Order (DAO) No. 2017-10 specifically prohibits the open-pit method of mining for copper, gold, silver, and complex ores in the country. Despite the protests of Ms. Lopez and the []

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GEOTECHNICAL CONSIDERATIONS IN OPEN PIT MINES

2021-7-13  practice in open pit mines. The application of sound geotechnical engineering practice is considered to be an integral component of Part 2 of the Mines Safety and Inspection Act 1994 (MSIA). It is emphasised that this guideline is not totally inclusive of all factors concerning the application of geotechnical engineering in open pit mining.

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[PDF] Slope Stability Risk Management in Open Pit

The stability of slopes in open pit mines is an issue of great concern because of the significant detrimental consequences instabilities can have. To ensure the safe and continuous economic operation of these mines, it is necessary to systematically assess and manage slope stability risk. This, however, has not been traditionally easy due to the fact that measuring the parameters needed to

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Optimized open pit mine design, pushbacks and the gap

2016-12-13  OPTIMIZED OPEN PIT MINE DESIGN, PUSHBACKS AND THE GAP PROBLEM—A REVIEW 511 JOURNAL OF MINING SCIENCE Vol. 50 No. 3 2014 Fig. 3. Graph G with dummy node x0 and arcs added from the dummy node x0 to all other nodes. It is clear from the definition of our graph G that a graph closure in G represents a physically feasible pit, if not, then a block not in our closure

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Analysis of a slope failure in an open pit mine using

In 1996 a slope failure occurred at the Round Hill open pit mine, operated by Macraes Mining Company Ltd. The failure as shown in Figure 1, involved three benches at an intermediate slope that was being pushed back towards the final high wall location. Figure 1. Photograph of pit area involved with slope failure.

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Economic consequences of geotechnical

The geotechnical hazards recorded at BHP’s coal mines over two years were costed using a BHP Coal developed tool. Costing included consequences incurred by the business due to geotechnical issues, such as the cost of lost, delayed and diluted coal, equipment remediation and re-scheduling, and delays to the mining schedule.

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Selection of practical bench height in open pit mining

2015-9-9  Key words: Open pit mining, bench height, multi-criteria decision making. INTRODUCTION As a definition in open pit mining, bench height is the vertical distance between crest and toe of the bench (Fourie and Dohm, 1992). Determination of optimum bench height is a major concern in most open pit

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Negative pH, efflorescent mineralogy, and consequences

Flat Open Pit Mine, Mattie Mine, Richmond and Richmond Extension Mines, and Hornet Mine. Ag, Au, Cu, Fe, Zn, and pyrite (for sulfuric acid production) were recovered at various times beginning in the early 1860s and ended with the termi-nation of open-pit mining in 1962. Iron Mountain was once the

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How can metal mining impact the environment?

2021-7-13  Underground mining generally results in relatively small waste rock disposal areas ranging from a few acres in size to tens of acres (0.1 km2). These areas are typically located near the openings of the underground workings. Open pit mining disturbs larger areas than underground mining

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Mining Technique Description Environmental

This preview shows page 11 14 out of 14 pages. Mining Technique Description Environmental consequences Open-Pit mining Subsurface mining Strip mining Mountaintop removal Drilling 76. Strengthen this weak statement: “Mining causes pollution that may disrupt the environment.”.

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Open-Pit Coal Mines: Implications for Green Mining

2021-5-7  is produced in all stages of open-pit operations, such as exploration, stripping, drilling, blasting, exploitation, transportation, crushing, and disposal [22,23]. Therefore, open-pit mining is known to be one of the main sources of particulate matter (PM) of different sizes [17,24]. Among other sources of pollution in mining regions, PM

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GEOTECHNICAL CONSIDERATIONS IN OPEN PIT MINES

2021-7-13  practice in open pit mines. The application of sound geotechnical engineering practice is considered to be an integral component of Part 2 of the Mines Safety and Inspection Act 1994 (MSIA). It is emphasised that this guideline is not totally inclusive of all factors concerning the application of geotechnical engineering in open pit mining.

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Open-pit mining geomorphic feature characterisation

2015-10-1  The assessment of open-pit mines as case studies is important, considering that (1) mining significantly affects the Earth’s surface and its related processes (e.g. erosion); (2) the increase in raw-material demand connected to an increase in the population (the global production of concrete, steel, aluminium, copper and glass will significantly increase by 2050 (Vidal et al., 2013); and (3

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Effects Of Mining on the Environment and Human

2021-7-11  Strip mining accounts for about 40 percent of the world’s coal mines but in some countries, such as Australia, open cast mines make up 80 percent of mines. Even though it’s highly destructive, industry often prefers strip mining as it requires less labour and yields more coal than underground mining.

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Optimized open pit mine design, pushbacks and the gap

2016-12-13  OPTIMIZED OPEN PIT MINE DESIGN, PUSHBACKS AND THE GAP PROBLEM—A REVIEW 511 JOURNAL OF MINING SCIENCE Vol. 50 No. 3 2014 Fig. 3. Graph G with dummy node x0 and arcs added from the dummy node x0 to all other nodes. It is clear from the definition of our graph G that a graph closure in G represents a physically feasible pit, if not, then a block not in our closure

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Economic consequences of geotechnical instabilities

The geotechnical hazards recorded at BHP’s coal mines over two years were costed using a BHP Coal developed tool. Costing included consequences incurred by the business due to geotechnical issues, such as the cost of lost, delayed and diluted coal, equipment remediation and re-scheduling, and delays to the mining schedule.

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Basics of an open pit mine

2013-1-6  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

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