opencast mining costs by stripping

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Open Pit Mining | IntechOpen

Feb 17, 2021· Open pit mining method is one of the surface mining methods that has a traditional cone-shaped excavation and is usually employed to exploit a near-surface, nonselective and low-grade zones deposits. It often results in high productivity and requires large capital investments, low operating costs, and good safety conditions. The main topics that will …

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Open Pit Mining Techniques|Surface Mines|Rock 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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Kenneth L. Leathers

Costs of Strip Mine Reclamation in the West Kenneth L. Leathers' INTRODUCTION Surface-mined coal accounts for about 60 percent of the Nation's annual coal sup- ply. At current levels of coal production, at least 55,000 acres of land are dis- turbed annually by such mining. Increasing demand for energy resources, coupled with

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Modeling for the Steady State Production of Large Open ...

1.1 opencast mining 1.2 stripping ratio 1.3 breakeven stripping ratio 1.4 quarriable limit as per stripping ratio ... Break even stripping ratio = (mining cost per tonne of minerals by u/g method or open cast mining cost + reclamation cost per ton of minerals) / (cost per cubic meter of over burden by the ...

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Optimum Coal Mine Water Reclamation Project

During 1971 the mine initiated an opencast strip mine, with mining activities commencing in the Optimus mining area. At that stage, very little legislation existed that could guide the opencast mining activities towards environmentally responsible mining. Strip mining activities started within the Woestalleen East Spruit and proceeded in

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Costmine - Industry Standard for Mining Cost Estimating

Mining Cost Service continues to be a useful reference on a wide range of topics for early stage mine planning through to 'fill the gaps' on more detailed studies. Mining Cost Service provides an independent source for information on equipment, quantities and cost for a significant number of mining methods and range of production rates.

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Everything You Need To Know About Open Pit Mining ...

Nov 01, 2018· The open pit mining method (also known as opencast, open-cut, or strip mining) is not extractive; meaning that most of the time there no need to tunnel directly into the earth. Rather, it is a technique used when rocks and/or ore are discovered near the surface.

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v115n8a17 Parametric estimation of capital costs for ...

Mining costs in Indian mines are about 35% higher than costs in leading coal-exporting countries such as Australia, Indonesia, and South Africa (Santra and Bangaria, 2014). The higher mining costs in India are driven mainly by low labour productivity. In 2013 India forecast a production increase of 3%, compared to only a 2% increase in South ...

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WASTE AND OVER BURDEN MANAGEMENT IN MEGA …

planned to work at 1:12 to 15 Stripping Ratio with the use of Large and Medium size equipments. As the production from the opencast mine is going up at higher stripping ratio, the problems of over burden dumps and accommodation thereof have posed another challenge, that need attention. Mining Scenario

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Open pit mining - SlideShare

Jul 31, 2017· 27 Other names for an open-pit mine include open-cast, open-cut, and strip mine. Mining Process in Open pits: The mine operation is developed by first establishing a bench, also known as a ledge, which enables miners to strip away layers. Benches are typically 13 to 197 feet (4 - 60 m) in depth.

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Open Cast Mining - YouTube

This is a very basic idea of how the Open Pit Mining process takes place. This was a very new mine when the footage was shot, and using very small machines

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Opencast Mining - an overview | ScienceDirect Topics

Mining and opencast mining in particular affect all components of ecosystems (Bradshaw, 1997).During opencast mining, material overlying the mined minerals, called overburden, is excavated and deposited in a heap. This heap can be located either inside the mine pit (an internal heap) or outside (an external heap).

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Understanding When Costs Associated with Overburden and ...

Oct 08, 2020· Most open-cast mines require the removal of overburden and waste material to access the underlying orebody. This activity is known as 'stripping'. By their nature, all open pits become narrower with depth, and consequently the volume of waste to be stripped is largest on the upper benches that must be mined first. The problem is […]

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Opencast Working And Stripping Ratio » MiningPathsala

Jun 30, 2021· Opencast mining is also known as open-put mining, open-cut mining, surface mining and also as strip mining. Process of mining in opencast mine :-Site Preparation. ...

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14.3 Open Cast (Strip) Mining - 1of 2

mining or contour mining. Area mining is often referred to as open cast or strip (furrow) mining. It is frequently practiced on a large scale, which results in low unit cost, high productivity, high recovery, and greater safety compared to underground min-ing. Contour (or collar) mining progresses in a narrow zone

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Design of Surface Mine Haulage Roads - A Manual

Mining Trucks. Pres. at Earthmoving Industry Conf., Central Illinois Sec., SAE, Warrendale, Pa. Apr. 15 16, 1975, 33 pp.) This organization has conducted more than 1,000 haulage truck stopping distance tests at active mine sites in British Columbia. The variety of truck makes and models included in the testing program present a representative brake

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Comparison of social costs of underground and open-cast ...

The total cost of mining includes the direct mining cost and social cost. The social costs include the impacts to the environment and socio-economic systems. According to the estimates for the complete costs of coal, coal mining only accounts for 22% of total social (external or "hidden") costs of coal (Epstein, Buonocore et al., 2011).

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Understanding When Costs Associated with Overburden and ...

Oct 08, 2020· Most open-cast mines require the removal of overburden and waste material to access the underlying orebody. This activity is known as 'stripping'. By their nature, all open …

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Overburden management in open pits: options and limits in ...

Mar 01, 2019· Overburden handling has important impacts on surface mining projects and has to be carefully planned considering both mining activities and site rehabilitation, .Overburden handling activities start at the beginning of the mining project, when a huge amount of material from initial underground development or stripping is removed for site preparation, .

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Open-Pit Mining Methods

Rio Tinto plc – Annual report – 31 December 2020 Industry: mining 1 Principal accounting policies (extract) (h) Deferred stripping (note 14) In open pit mining operations, overburden …

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Stripping costs definition — AccountingTools

Apr 10, 2021· Stripping costs are those costs incurred when removing overburden or waste materials in order to obtain access to a commercially-producible ore body. If so, and the activity provides better access to the deposit, then under GAAP the cost should be capitalized along with other development costs.

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Surface mining planning and design of open pit mining

Jan 09, 2016· Table 1 is the calculation of the mining cutoff grade for a copper project with the following parameters: 30 kt/d (33000 st pd) of ore mined for 20years $300,000,000 capital cost (include replacement capital) $1.00 mining cost per ton of ore $0.95 mining cost per ton of waste $3.00 processing cost per ton of ore $1.00 general and administrative ...

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IFRS - IFRIC 20 Stripping Costs in the Production Phase of ...

In October 2011 the International Accounting Standards Board issued IFRIC 20 Stripping Costs in the Production Phase of a Surface Mine.It was developed by the Interpretations Committee. Other Standards have made minor consequential amendments to IFRIC 20, including Amendments to References to the Conceptual Framework in IFRS Standards (issued March …

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Topic 5: Mining Methods-Part I-Surface mining

Nov 02, 2011· Topic 5: Mining Methods-Part I-Surface mining 1. Topic 5: Mining Methods Part I-Surface mining Hassan Z. Harraz [email protected] 2010- 2011 Prof. Dr. H.Z. Harraz Presentation This material is intended for use in lectures, presentations and as handouts to students, and is provided in Power point format so as to allow customization for the …

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chap 4.2.docx - 4.1.7 CUT-OFF STRIPPING RATIO OR BREAK ...

waste cost/ton stripping pit Open ore cost/ton mining pit Open-ore cost/ton mining d Undergroun BESR $0.35 $0.30-2.00 = 4.86 tons waste:1 ton ore Only that part of the orebody where the stripping ratio does not exceed 4.86 tons waste: 1 ton ore should be mined by open pit methods. For this reason it is necessary to update the long-term plan of the mining project at …

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IFRIC 20, policy for deferred stripping costs, mining ...

Rio Tinto plc – Annual report – 31 December 2020 Industry: mining 1 Principal accounting policies (extract) (h) Deferred stripping (note 14) In open pit mining operations, overburden and other waste materials must be removed to access ore from which minerals can be extracted economically. The process of removing overburden and waste materials is referred…

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Methods for Equipments Selection in Surface Mining; review

the minimum stripping cost, -the evaluation of the contractors fleet from the view point of ... related to equipment selection of opencast mining. In this system, advanced genetic algorithms search techniques to find the input variables that can achieve the optimal cost, and

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Open-Pit Mining Methods

Apr 09, 2017· The open-cut method was adopted to mine that portion of the ore body between the 300-foot level and surface. Early in 1931 stripping of the hanging-wall waste by glory holing had been in progress for 3 years, during which 1,500,000 tons of rock had been stripped and transferred to the dump by a 42-inch conveyor belt.

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(PDF) Surface Mine Design - ResearchGate

Opencast is also a surface mine to mine out the flat deposits but the overburden is backfilled in the worked-out area. In open cast (or strip) m ining, overburden

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IAS 16 — Stripping costs in the production phase of a mine

Aug 26, 2010· IFRIC DI/2010/1 Stripping Costs in the Pro­duc­tion Phase of a Surface Mine published. Comment deadline 30 November 2010. 10 August 2011. Near Final Draft of IFRIC 20 published. 19 October 2011. IFRIC 20 Stripping Costs in the Pro­duc­tion Phase of a Surface Mine issued. Effective for annual periods beginning on or after 1 January 2013.

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i) Mechanical excavation methods; such as Open-pit …

Open Cast Mining/Strip Mining Introduction As the name speaks, it is a surface mining system in which deposit is opened to the atmosphere and after removing the orebody, the over burden …

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New guidance on accounting for stripping activities – a ...

(stripping) costs in the production phase of a mine. The comment letter period closed in November 2010. Who from this sector is impacted? The stripping costs DI will impact all companies with open-pit (surface) mines. The new guidance applies to stripping costs that are incurred in open-pit mining activity during the production phase of the mine.

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New guidance on accounting for stripping activities – …

(stripping) costs in the production phase of a mine. The comment letter period closed in November 2010. Who from this sector is impacted? The stripping costs DI will impact all …

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