influence of striping ratio on open cast coal mining

Production stripping costs - KPMG

Oct 19, 2011 . average life-of-mine stripping ratio approach, while others expense such . prospective basis, with transitional adjustments being recognised in opening retained .. which stripping costs may be pre-production for the pit but not for the . removal during the production phase in underground mines may be.

Surface Mining - ResearchGate

Feb 2, 2016 . 1) Definition of Open pit Mining Parameters: . The typical large open pit mining operation that has been in production for . of the kind used in European coal mines have not been applied to metal ... not impact stripping ratio.

status of surface mining - Hacettepe Üniversitesi

Declining Stripping Ratio Method- this requires that each bench of ore be mined in . Coal. STRIP mining. OPEN CAST mining. • Non-metallic materials ... The detrimental effects of the presence of ground water on surface mining are:.

Surface Mining Methods

Mar 13, 2011 . Mining rates and ratios influence the life of the mine which is defined by . Open-pit mining and strip mining are the two major categories of surface . Coal is the most common commodity that is strip mined from surface seams.

The economics of extended pre-strip stripping - Research Online

Feb 15, 2013 . In the case of many Australian coal mines, truck-shovel systems . a pit simulation model to assess the effect of pre-strip width on the overall pit economics. .. A pre-strip pass offset is also required in many open cut strip mines. ... cash flows or more simply, by setting the annual discount rate to zero.

Stripping ratio - Wikipedia

In mining, stripping ratio or strip ratio refers to the ratio of the volume of overburden (or waste . removal prior to ore extraction, underground mining operations tend to have lower stripping ratios due to increased selectivity. . Open-pit mining.

What Is the Optimal and Sustainable Lifetime of a Mine? - MDPI

Feb 11, 2018 . and these influence the lifetime and capacity of a mine [7]. . A case of assessing the sustainable lifetime for open pit mining (see Section 3.4) .. This means that the rule can be applied to phosphate deposits, open pits and underground mines ... cut-off, the so-called marginal stripping ratio, defined as the.

Opencast coal mining at Kriel Colliery - SAIMM

improve the volumetric extraction of coal from the new mine, the Kriel Division of Anglo Power Collieries was . This paper describes the opencast operation at Kriel, with particular reference to the water problems ... The effect of this change was to decrease the . of the concept of average stripping ratio, which required.

1 4 Stripping Ratio | Ratio | Surface Mining - Scribd

Pit Limits · Open Pit Mine Planning Fundamentals EP · 150315579 Surface Mine Design and Practice . Ap) 3. explain the influence of stripping ratios on planning decisions (A, S) 4. . Break even stripping ratio (BESR) In case of coal deposits,.

Open pit scheduling features to improve project economy

process, the mine operates at a higher strip ratio during the initial period and moves towards . The impact of this is an annual production . open pit mining, with the aim of demonstrating that a pushback approach is practical and can .. shale, coal, gold and silver, iron ore, diamonds, zinc, bauxite, potash and rare earth.

Strip Mine Reclamation and Economic Analysis - UNM Digital .

Among the many descriptions of the effects of strip mining on landforms, water- courses, and land use, the . Third, compared with open pit metal mines, coal strip pits are very short-lived. . Typically the ratio of waste to coal is 12:1. The ratio of.

influence of striping ratio on open cast coal mining,

Details of the Open pit Mine Model.

Jul 25, 1977 . removed from the ground by open pit mining, underground mining, or combinations of both . a list of the factors that affect the selection of a mining method. ... 2) Stripping ratio is defined as the tons of overburden and waste.

strip mining - an overview | ScienceDirect Topics

Surface soil is often stripped separately and dumped as stockpile. . within permissible stripping ratio the overburden is removed by opening successive . Although open-pit mines and underground mines are the two most common mining .. The most direct and immediately obvious ecological effect of coal extraction has.

Factors and challenges affecting coal recovery by opencast pillar .

Opencast pillar mining requires maximizing coal recovery in order to be . design process of the opencast pillar mining method was also influenced by the coal . the low stripping ratio, high recovery and extraction rate, and environmental and.

Factors and challenges affecting coal recovery by opencast pillar .

Opencast pillar mining requires maximizing coal recovery in order to be . design process of the opencast pillar mining method was also influenced by the coal . the low stripping ratio, high recovery and extraction rate, and environmental and.

Calculating Stripping Ratios for Area Strip Mines Mnge ppt video .

Stripping Ratio as a Fundamental Ability to surface mine depends on the value of . Removal Stripping Ratio determines relative amounts of each to be moved If coal . Bottom of a Strip Mine Top of a Strip Mine For a pit 1 mile long and 160 ft . Overburden Interest Item – Slope Angle Has no effect The problem is 1D Only.

IFRS Developments for Mining & Metals: Accounting for waste . - EY

accounting for waste removal costs - IFRIC Interpretation 20 – Stripping Costs in the. Production Phase of .. differs from the life-of-mine average strip ratio approach, which is widely used .. An entity will need to determine what impact IFRIC 20 will have . an entity uses an extraction method, such as open cast (strip) mining.

opencast mining - an overview | ScienceDirect Topics

Opencast mining operations involve huge quantities of overburden removal, dumping and . A substantial increase in the rate of accumulation of waste dumps in recent years has . Metal mobility is influenced by many processes driven by the plant, .. Protozoa as Indicators in Reclaimed Open-Cast Coal Mining Areas.

Chapter 2: The Environmental Effects of Strip Mining - The Strip .

Strip mining handbook - Natural Resources Law Center/Red Lodge Clearinghouse. . of land so long as the ratio between the overburden and the coal seam, called the stripping ratio, . Typical open pit mining method with thick coal seam.

Surface Coal Mining Methods in Australia - IntechOpen

Mar 9, 2012 . operating at higher stripping ratios (Westcott et al., 2009). . Initially open cut mines in coal mining was classified as strip mines where ... The coal mining industry is concerned to minimise its impact on all aspects of the.

2012 Americas School of Mines - PwC

Open pit mines are used to exploit low grade, shallow ore bodies. However, some pits .. Fording River produces both metallurgical (coking) coal for the steel industry and thermal coal for power .. Hard to define a strip ratio when what was waste becomes ore and vice versa. . In effect, Bagdad is buying an option on the.

chidliak: Strip Ratio

An example would be a strip ratio of 6:1 and a pure open pit cost of $4/tonne. . Strip itself is easily understood in coal mining where you may have 20 metres of . We can clearly see CH6 has the most effect with strip ratio and pit wall angle.

1. Overview of Mining and its Impacts

mining involving extraction of coal or aggregates, such as sand . the environmental impact assessment (EIA) for the project must . Open-pit mining is a type of strip mining in which . quantity of mineral ore (called the 'strip ratio') is usually.

strip mining - an overview | ScienceDirect Topics

Surface soil is often stripped separately and dumped as stockpile. . within permissible stripping ratio the overburden is removed by opening successive . Although open-pit mines and underground mines are the two most common mining .. The most direct and immediately obvious ecological effect of coal extraction has.

Surface Mining - ResearchGate

Feb 2, 2016 . 1) Definition of Open pit Mining Parameters: . The typical large open pit mining operation that has been in production for . of the kind used in European coal mines have not been applied to metal ... not impact stripping ratio.

Determination of Optimum Production Capacity and Mine Life .

In open pit mine planning, many factors affect total fixed and operating costs, . brush mine plan; (depth, stripping ratio, ore grade, selling price, distance, etc.);.

INTRODUCTION TO MINING

had a greater impact than any other discovery until dynamite was invented by. Alfred Nobel in . mining equipment, which extracts the softer minerals like coal without the use . the first modern mine was an open pit, subsequent operations were .. determine the stripping ratio, the ratio of waste removed to ore recovered; it.

Project design of an open pit colliery in Terkidag, Turkey - CiteSeerX

the project design of an open pit coal mine that is located in Thrace region of Turkey .. factors that have a major effect on the success or otherwise of a mine plan. . was found as 65,588,929 tons in the basin for an average stripping ratio of 20.