# break even stripping ratio example for coal mining

#### break even stripping ratio example for coal mining

Break-even stripping ratio | BritannicaThe break-even stripping ratio is a function of ore value and the costs involved. Read More. Schematic diagram of an underground coal mine, showing surface facilities, access shaft, and. In coal mining: Contour strip mining. If the break-even stripping ratio remains favourable, further cuts into the hillside will be made.Stripping ratio and pit limit - Basic Mining TechniquesJul 26, 2017 . For instance the overall stripping ratio of two (2) benches will be the ratio of sum of waste to ore. This is purely a physical ratio of total waste to total ore. [Note: Equation 2 is expressed in tonnes (t), can also be expressed in volume (m3)]. 4. Maximum allowable (break-even)stripping ratio. The maximum.

1 4 Stripping Ratio | Ratio | Surface Mining - ScribdBreak even stripping ratio (BESR) In case of coal deposits,. In case of other deposits,. BESR helps in determining the pit limit. Example: Selling cost of coal per te : Rs 2500/Mining and preparation cost per te: Rs 500/Overburden Handling cost per cubic meter: Rs 100/-. 2. 4. 3. Limiting stripping ratio (LSR) In case of Coal.Calculating Stripping Ratios for Area Strip Mines Mnge ppt video .Stripping Ratio as a Fundamental Ability to surface mine depends on the value of the ore being high enough to offset the cost of Overburden Removal Stripping . 10 Your Turn Use What You Have Learned About Calculating Stripping Ratios for Strip Mines and Break Even Limits to Determine the Size of a Coal Reserve Do.

break even stripping ratio example for coal mining,Mine Plan Justification - Whitehaven Coal

Resources definition - Pit limits and coal resource boundaries;. •. Mine sequencing;. •. Waste dump determination – Northern Overburden Emplacement Area. (NOEA) and .. The breakeven strip ratio was estimated at approximately 20:1 bcm/t ROM coal for the current metallurgical and thermal coal product mix. Higher strip.

Surface Strip Coal Mining Handbook - sacea

In the case of surface strip coal mining, the variability of the stripping ratio can be due to increasing overburden or coal seam thickness. Distinction is often made between several different ratio calculations, such as actual or overall stripping ratio, ultimate or break - even stripping ratio, daily or working stripping ratio, and the.

Determining Stripping Ratio - Basic Mining Techniques

Apr 4, 2016 . For Example: Determine the Stripping Ratio of the ore section (green zone) shown below: We know; SR = Waste/Ore, therefore;. SR = 2500/5000 = 1:2 (i.e. 0.5) (i.e. one unit of waste is removed to recover 2 units . The maximum allowable Stripping Ratio (SRmax) defines break even stripping ratio (BESR).

break even stripping ratio example for coal mining,Surface Mining - ResearchGate

v) Pit diameter vi) Water Damage vii) Strip Ratio (SR). 1.8) Open-pit mining sequence. 1.9) Various open-pit and orebody configurations. We will explore all of the above in Topic 6. Prof. Dr. H.Z. Harraz Presentation. February 2, 2016. 2) Limit or Ultimate Pit Definition: 2.1) Introduction. 2.2) Manual Design. 2.3) Computer.

Mine Plan Justification - Whitehaven Coal

Resources definition - Pit limits and coal resource boundaries;. •. Mine sequencing;. •. Waste dump determination – Northern Overburden Emplacement Area. (NOEA) and .. The breakeven strip ratio was estimated at approximately 20:1 bcm/t ROM coal for the current metallurgical and thermal coal product mix. Higher strip.

Surface Strip Coal Mining Handbook - sacea

In the case of surface strip coal mining, the variability of the stripping ratio can be due to increasing overburden or coal seam thickness. Distinction is often made between several different ratio calculations, such as actual or overall stripping ratio, ultimate or break - even stripping ratio, daily or working stripping ratio, and the.

Mine Plan Justification - Whitehaven Coal

Resources definition - Pit limits and coal resource boundaries;. •. Mine sequencing;. •. Waste dump determination – Northern Overburden Emplacement Area. (NOEA) and .. The breakeven strip ratio was estimated at approximately 20:1 bcm/t ROM coal for the current metallurgical and thermal coal product mix. Higher strip.

Stripping ratio - Wikipedia

In mining, stripping ratio or strip ratio refers to the ratio of the volume of overburden (or waste material) required to be handled in order to extract some tonnage of ore. For example, a 3:1 stripping ratio means that mining one tonne of ore will require mining three tonnes of waste rock. Stripping ratios are typically reduced to.

break even stripping ratio example for coal mining,A technique for assessing ultimate open-pit mine . - Lehigh Preserve

Jan 1, 1980 . "stripping ratio." The feasibility and benefits of the SAMPLE method are demonstrated by means of a case study. In this study the ultimate pit limits of the. Excelsior iron . mineral and coal deposits except for those with highly variable grades and high ore ... this point the mine operator is "breaking even.

break even ratio for australia coal mining - Odysseus Project

break even ratio for australia coal mgGrdg . Presentation Title, Arial bold, sizeUnivers, Strippg Ratio, Cut Off Grade and Impact on Production.Optimum Coal . . For Coal Mg. break even stripg ratio - crusher equipment. break even strippg ratio example for coal mg CachedMg defition of Mg the Free Onle Encyclopedia.

Competitiveness and performance prediction of surface coal mining

Break Even Stripping Ratio. BLUE. Best Linear Unbiase Estimator .. variables in producing coal, such as the type and quantity of capital and the stripping ratio, which is the quantity of overburden to . project, even more samples of the deposit of interest, mine plans, mine layout, and a process plan about the project. By this.

Economics of Underground Conversion in an Operating Line .

is assumed that an underground source of line is accessible and that its extraction is technicdy feasible. .. mining operation may result in an increased stripping ratio and haulage distance, with a direct increase in operating costs. . Chapter 4 - Economic Break-Even Program: describes the content of the program as.

Economics of Underground Conversion in an Operating Line .

3 -3 -3. Sublevel S toping. 3 -3 -4. Mining Costs. 3 -3 S. Environmental Issues. 3.4. Open Pit Conversion. CBXPTER 4: ECONOMIC BREAK-EVEN MODEL. 4.1. Introduction . Cost Flow and Present Worth Calculations. CHAPTER 5: .. mining operation may result in an increased stripping ratio and haulage distance, with a.

What is the mining process of coal? - Quora

EDIT 1 :- For the coal deposits lying at the lesser depth, the surface mining methods of extraction of coal is generally used. While mining the coal by surface mining method ,stripping ratio (tons of recoverable mineral/ore reserve produced per cubic meter of overburden ) and break-even stripping ratio (the.

break even stripping ratio example for coal mining,analisis stripping ratio optimal berdasarkan perhitungan net present .

One of the important aspects in planning the coal mining is Stripping Ratio (SR). In this research, two types of calculation in Stripping Ratio had been done, which are the Break Even Stripping Ratio (BESR) and the Optimal Striping Ratio. Break Even Stripping Ratio is the limit of stripping ratio that could be used when the.

Estimating Average Total Cost of Open Pit Coal Mines in . - InfoMine

such as coal quality, stripping ratio, as well as other possible explanatory variables is less important. Estimation of . deposit has a strong influence on production rate (Smith, 1997), even though coal reserves are available . called 'Mine and Mill Equipment Cost Calculator' that calculate all equipment cost in feasibility. This.

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

Feb 11, 2018 . its lifetime must be optimized under economic conditions, for example, according to Taylor's Rule. . Keywords: sustainable mining; lifetime of a mine; break-even cut-off; sustainable cut-off; resource efficiency ... cut-off, the so-called marginal stripping ratio, defined as the maximum allowable waste:ore ratio.

stability, capability, potential - Anglo American

Dec 9, 2014 . Stay in business capex excluding capitalised stripping and development (\$m). Other. Major open pits. Longwalls. ~\$1bn. ~20%. ~55%. ~25%. Capitalisation for open pit mines is determined by comparing actual waste stripping ratios to the average strip ratio for the relevant section of the mine. Capitalised.

Productivity in mining operations: Reversing the downward trend .

We have deliberately excluded ore grade from the calculation. The three elements are then linked with a measure of physical mine output, which is not affected by changes in the ore grade and stripping ratio. The basis for MPI is the well-established Cobb-Douglas production-function equation used to measure productivity.

D) Coal resource availability, recoverability and economic .

significantly smaller than total coal resources. For example, the current maximum depth for underground coal mining is approximately 3,000 to 4,000 ft (914.4 to 1219.2 m). Thus, . between an analysis using a break-even economic hurdle and inclusion of at ... extensive, very thick, low stripping ratio resources in the PRB.

9 Practical Solutions to Mining Problems

spoils uphill; and the downhill mode, where the coal seam is again dipping but the dragline spoils downhill. . mine. Later, Erdem (1996), Erdem & Çelebi (1998) and Erdem et al. (1999) introduced design guidelines for the pullback stripping method for a flat-lying coal ... quahty views are obtained Figure 6 is an example.