economics of open pit mining
Optimized design of drilling and blasting operations in open pit mines
Drilling and blasting are the two most significant operations in open pit mines that play a crucial role in downstream stages. While previous research has focused on optimizing these operations as ...
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Economic significance of geotechnical uncertainties in open pit mines
The possibility of increasing the pit slope angles of the Chuquicamata Mine as the pit approaches its planned closure is being considered. Compared to the conventional mine design, the slope steepening is understood to raise the net present value (NPV) of the mine, but also, attracts an increase in possible adverse outcomes related to the …
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Strategic mining options optimization: Open pit mining, …
Introduction. Mining is the process of extracting a beneficial naturally occurring resource from the earth [1], [2] and historical assessment of mineral resource …
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A PROCEDURE FOR PRELIMINARY ECONOMIC …
evaluation for open pit mines. This computer-assisted procedure uses open pit mine design techniques to determine parameters such as cutoff grade, production rate, and …
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Open pit optimization—strategies for improving …
Open pit mine planning involves extracting the mining blocks in specific and strategic sequence from the mine in order to obtain the highest net present value. Open pit planning takes into consideration variety of …
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Open Pit Mining
Open pit mining has higher productivity (3–5 times of underground methods), lower production costs, more safe and hygienic working conditions, more …
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Open Pit Optimization
economics of open pit mining projects through the use of mathematical optimization techniques goes back to early 1960's. Unfortunately, up until recently, many of these "optimizing algorithms ...
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Research on the Optimization of Open-Pit Mine Cast …
As the key technology of high-step stripping and blasting engineering, throwing blasting will be the development trend of the production optimization and benefit maximization of the open-pit mine in the future. In order to break with the research idea of optimizing the cast blasting effect by improving the effective throwing rate for a long …
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Evaluating the environmental and economic impact of mining …
Surface mining purposely exhumes ores at the surface or close to the earth's surface, including open-pit mining and dredging. Underground mining, however, removes minerals such as in hard-rock mining by extracting under the surface and removing the ore ( Aryee et al., 2003 ; Balasubramanian, 2017 ; Gibria, 2014 ; Northey et al., 2013 ).
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Making the grade: understanding exploration results
As a rule of thumb, open pit mining can process ore for $10 per tonne and, where the ore grade is more than double that at $20 per tonne, results would be economic. Consider that 1% of a metric ...
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Mining and Stripping of Open Pit | SpringerLink
In open-pit mining, there is little difference between the process of stripping rock and mining ore. The equipment on a working bench can be used for both mining and stripping. As the central link in the open-pit mining process, mining and stripping method determines the mining mode, technical equipment, mining intensity, and economic …
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ECONOMIC ASSESSMENT AND MINE PRODUCTION …
Surface mining operations involve high levels of complexity and uncertainty that last for many years and require huge capital investment and risk. Each open-pit mine is unique, based on the physical characteristics of the ore deposit and …
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Open-Pit Mine Planning with Operational Constraints
the economic viability of open-pit mining projects. A major practical challenge is that the resulting mathematical models are very large, with potentially hundreds of millions of variables and constraints. Addressing this challenge and delivering tools which are usable on real-world 3D
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Calculating ultimate pit limits and determining pushbacks in …
Volume 72, August 2021, 102058. Calculating ultimate pit limits and determining pushbacks in open-pit mining projects. ArturoBuelga Díaza, IsidroDiego Álvarezb, CésarCastañón …
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Optimized design of drilling and blasting operations in open pit mines
Drilling and blasting are the two most significant operations in open pit mines that play a crucial role in downstream stages. While previous research has focused on optimizing these operations as two separate parts or merely in a specific parameter, this paper proposes a system dynamic model (SDM) for drilling and blasting operations as …
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Environmental Impact of Open-Pit Mining
Open-pit mining, a technique used to extract minerals such as copper, gold, iron, and coal, represents one of the most visually impactful and ecologically disruptive forms of mineral extraction. ... As we continue to rely on minerals for our economic and technological development, it becomes increasingly vital to balance our needs with the ...
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Economic evaluation of materials handling systems in a deep open pit mine
Materials handling constitutes a large portion of the costs of mining operations. Therefore, the system chosen must be cost-effective yet meet the production demands of the mine. In this paper, unit haulage costs, economic risk and sensitivity analyses were conducted to determine the optimal way of handling materials in a deep …
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Open Pit Mining
Mining and milling. Markus H.A. Piro, Ksenia Lipkina, in Advances in Nuclear Fuel Chemistry, 2020 8.2.3.1 Open pit mining. Open pit mining refers to mining directly on the ground surface, thereby producing an open pit. This method is practical and cost-effective when the uranium ore is located near the surface (e.g., within 100 m). Underground …
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Open-pit mining environment impact seen outweighing economic …
The mining industry welcomed the lifting of the ban, taking the position that the practice can be made environmentally sustainable. "The mining method is dependent on the location and configuration of the ore body. Open-pit mining is employed for shallow or near-surface mineral deposits, where underground operations are impractical.
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Economic significance of geotechnical uncertainties in …
the impact of slope angles on the economics of the pit. 2 Types of data uncertainty and risk in the operating mining ... Economic significance of geotechnical uncertainties in open pit mines R Jele and MJ Dunn 114 Mining Geomechanical Risk 2019, Perth, Australia Table 1 Suggested target levels of data confidence by project stage (after Read ...
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Economic advantages of belt conveying in open-pit mining
Franke, R. (1982) Combined Mining Systems for Open Pit Mines. bulk solids handling, 1, 75–80. Google Scholar Müller, G. (1986) Senkung der Betriebskosten im Festgestein-Tagebau durch Einsatz von Brecher-Band-Systemen, fördern und heben, 8, 556–559. Google Scholar
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Open-Pit Mining | Method and Process | Epiroc US
Open-pit mining clearly offers a number of economic advantages over underground mining, especially now that mineral-processing technology has advanced to the stage where very low-grade ores can be treated profitably. 100 to 150 years ago, this was not the case, and mining was still much more selective.
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Untangling the complex web of environmental, social, and …
Deep and large-scale (DLS) open-pit mines are significant contributors to the mining of natural resources and hold significant importance in the world economy. DLS …
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Comparative study on the economy of hybrid mining trucks for open‐pit
Fig. 3 depicts the powertrain configuration of a diesel-electric mining truck. Currently, mining trucks work based on the following principle. Under the uphill condition, mechanical energy generated by the engine is transformed into electricity via a generator, and the electric energy is then sent to the electric wheels after being rectified, inverted, …
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Trends in underground mining for gold and base metals
Underground mines also tend to be more targeted, more costly, and less productive than open-pit mines. Because the choice of which underground method to deploy is predominantly driven by the geology of the deposit being mined, the operator has little flexibility in choosing the mining method given that the objective is to maximize net …
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Equipment Selection and Sizing for Optimum Planning and
In an open-pit mine, a variety of equipment options are available for transporting ore, with shovels and dump trucks being the most commonly used. ... in relation to the actual quantity of ore that is recovered. This ratio is a critical factor in the planning and economic evaluation of open-pit mining operations, as it impacts both …
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The Contribution of Air-Deck Blasting to Open Pit Mining Economics …
Open pit operators are facing a number of challenges in the area of blasting and blasting processes, such as wall control, quality of fragmentation, explosives consumption and vibration. Remaining financially viable is one of the most significant objectives for mining professionals as they work through the blasting challenges within the mining chain of …
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Optimal Pitwall Shapes to Increase Financial Return and …
In the last four decades, a clear trend of open pit mines being excavated at increasing depths is apparent (Fig. 1a).As existing mines deepen owing to the increased efficiency of mining equipment and improved exploration techniques and technology, the ore bodies left to be exploited are everywhere deeper (Fig. 1b).Between 1930 and 2000, …
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20 Pros and Cons of Open Pit Mining
Direct Employment Opportunities: Open pit mines generally require a larger workforce, thus creating more direct employment opportunities in regions where the mines are located. This can stimulate local economies. Stimulates Local Economies: Besides direct employment, open pit mines often require a range of ancillary services and …
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The Advantages of Open Pit Mining
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 …
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