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# Break Even Stripping Ratio Example For Coal Mining

### 326 Maximum Allowable Stripping Ratio Srmax Abc 123

Earlier in this lesson, we looked at the maximum stripping ratio, and we did it for coal seam. You will recall that the maximum allowable stripping ratio, SR max, also called break-even stripping ratio, is the maximum amount of overburden/waste that can be extracted per unit of ore at the economic pit limit. The SR max is determined solely by economics, to establish the ultimate boundary of the pit, where break even occurs, i.e.

### Break Even Stripping Ratio Example For Coal Mining

break even stripping ratio example for coal mining. stripping ratio in coal mining CachedIn mining, stripping ratio or strip ratio refers to the ratio of the volume of overburden (or waste material) required to be ... Read more. break even ratio for australia coal mining - crusher in India.

### Determining Stripping Ratio Basic Mining Techniques

BESR (0.006*0.92*1.63*1000) (6.8)/7.5. 0.29 0.3 is the maximum allowable stripping ratio for break even. This mean the income generated by one unit of 0.6% graded copper is able to offset the cost of 3 units waste at no profit (Income Cost).

### Tutorial 3 Breakeven Stripping Ratio And Cutoff Grade

View Tutorial 3 - Breakeven stripping ratio and cutoff grade.pdf from MINING 4120 at The University of Adelaide. Gemcom Software Mining Engineering Question 1 Break Even Ratio A coal mine in the

### Breakeven Stripping Ratio Britannica

The break-even stripping ratio is a function of ore value and the costs involved. If the break-even stripping ratio remains favourable, further cuts into the hillside will be made. Otherwise, if there are sufficient reserves under the knob of the hill, the coal may be recovered by underground mining or by augering.

### Ppt Calculating Stripping Ratios For Area Strip Mines

The Coal Area Strip Mine Formula Strip Ratio OB Thickness (in ft) * 11.11/ Coal thickness in inches Assumes coal is 80 lbs/ft3 (good for bituminous) Area Strip Mine Geometry Geologic Stripping Ratio no accounting for rehandle or less than 100% coal recovery 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

### Effect Of Stripping Ratio In Coal Mining

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 31 stripping ratio means that mining one tonne of ore will require mining three tonnes of waste rock.

### What Is A Stripping Ratio With Picture

For example, if the mining company must extract one part of ore to three and a half parts of waste in order to break even, it stands to reason that the company will seek to look for mining sites where it can extract at least one part of ore to two and a half parts of waste in order for the mining venture to be profitable.

### What Is Stripping Ratio Coal Mining

SURFACE MINING METHODS. 2-3. 2.2 Strip Mining. Strip mining is ideally applied where the surface of the ground and the ... Typical examples of this type of mining are the larger tonnage coal mining ..... 5.2 Discuss the concept of stripping ratio and how haul road gradient...

### How Is Stripping Ratio Calculated Answerstoall

Jan 30, 2021 The break-even stripping ratio is a function of ore value and the costs involved. If the break-even stripping ratio remains favourable, further cuts into the hillside will be made. Otherwise, if there are sufficient reserves under the knob of the hill, the coal may be recovered by underground mining or by augering.

### Break Even Ratio For Australia Coal Mining

Break-even stripping ratio Britannica. In coal mining Contour strip mining. If the break-even stripping ratio remains favourable, further cuts into the hillside will be made. Otherwise, if there are sufficient reserves under the knob of the hill, the coal may be recovered by underground mining or by augering.

### Effect Of Stripping Ratio In Coal Mining

Break Even Stripping Ratio Example For Coal Mining. Effect of stripping ratio in coal mining break even stripping ratio example for coal mining break even stripping ratio example for coal mining accounting for stripping costs in the seem that it s value does not have any effect on the stripping ratio strip mining an overview sciencedirect topics.

### Stripping Ratio Mining Britannica

Other articles where Stripping ratio is discussed coal mining Choosing a mining method calculated with the aid of stripping ratios, which represent the amount of waste material that must be removed to extract a given amount of coal. Stripping ratios can also consider the selling price of coal, and a certain minimum profit can be added to the total cost of producing and

### Break Even Analysis How To Calculate The Cut Off Grade

For conducting a mining projects break even analysis, you first need to know about the operational expenses (OPEX).When the OPEX is known, you can calculate the minerals cut off grade, which is the break even grade, below which it is not economically viable to mine the ore.To find out how I come up with the cost price per tonne (OPEX) if a feasibility study isnt available, I refer you ...

### Basic Mining Techniques

Basic Mining Techniques

### Whats The Average Stripping Ratio Of Open Pit Mines

The stripping ratio in a mine is chosen based on economics. ... Thus you may have a range of stripping ratios from 11 to 115 or even more. ... for example, midnight (0-30) means sill value for ...

### Pdf Surface Mine Design Researchgate

Auger mining is a surface mining techniq ue used to recover additional coal from a seam located behind a highwall produced either by stripping or open-pit mining.

### 732 Contour Mining Abc 123 Testing Site Course

Jul 03, 2010 Mining will proceed by advancing into the hillside until reaching the break-even stripping ratio. At this point, the highwall will remain. Under certain conditions, we may choose to take advantage of the exposed coal seam, and develop an underground mine or practice highwall mining, which will be discussed later in

### Engin2503 Surface Mining Operations And Equipment

Assume an underground mining cost of \$25.5/ton ore for an orebody. Assume open pit mining costs at \$0.0028/kg ore removal and \$0.0035/kg waste removal. Determine the stripping ratio for an open operation that results in break-even cost differential between the two mining methods. Question 21.

### Calculating Stripping Ratios For Area Strip Mines

Calculating Stripping Ratios. for Area Strip Mines Mnge 315. Dr. B. C. Paul spring 2003 revised 2010 Note These notes contain information considered common knowledge to those familiar with Strip Mining. Books such as Elements of Practical Coal Mining and SMEs Surface Mining were specifically referenced. Stripping Ratio as a Fundamental Ability to surface mine depends on the value

### Mining Coal Mines

If the break-even stripping ratio remains favorable, further cuts into the hillside will be made. Otherwise, if there are sufficient reserves under the knob of the hill, the coal may be recovered by underground mining or by augering. Area strip mining

### Coal Ratio An Overview Sciencedirect Topics

With increasing overburden to coal ratio, the cost of removal of overburden (known as stripping cost) adds considerably to the cost of mining the coal beyond economic limit. To develop a mine, the break even stripping ratio (at the surface of the final pit) must be established. It is found from the formula

### What Is Stripping Ratio Coal Mining

Surface Strip Coal Mining Handbook - sacea.org.za 1 introduction to surface strip coal mining 1.1 fundamental concepts and definitions 2 1.2 surface coal mining 5 1.3 production cost and stripping ratio analysis 8 1.3.1 stripping ratio for multiple seams 11 1.4 basic profit function analysis 13 2 geology and exploration 2.1 geology of south african coal

### In Coal Mining What Is A Good Strip Ratio

break even stripping ratio example for coal mining. Break-even stripping ratio Britannica 19-08-2020 In coal mining Contour strip mining. If the break-even stripping ratio remains favourable, further cuts into the hillside will be made. Otherwise, if there are sufficient reserves under the knob of the hill, the coal may be

### 12stripping Ratios Pit Limits Introduction To Mining

Break-even stripping ratio The instantaneous stripping ratio at the point where the cost of stripping the waste exactly equals the value of the ore uncovered. Stripping Ratio Example It will be assumed that the pit is deepened in bench height increments of 25 ft the minimum pit

### Analisis Break Even Stripping Ratio Untuk Desain

Mine age of fixed BESR is 10 years. As dynamic BESR give total coal reserve 65.297.477 ton with NPV USD 826.886.944,92, IRR 85% and pay back period 1 year 7 month with 11 years of mine age. Kata Kunci Break Even Stripping Ratio (BESR), Desain Pit, Batubara, Tamiang Layang, Kalimantan Tengah

### Break Even Ratio For Australia Coal Mining

Break even stripping ratio example for coal mining - in general terms the break even stripping ratio is given in general terms the break even stripping ratio is the cost of mining waste ore h 50 40 ft 50 waste 50 ft example problem 3 the break even stripping more info gt live chat what is

### Stripping Overburden Limestone Mining

Lecture 4 Calculating Stripping Ratios for Area Strip . overburden costs 45 cents per cubic yard to move what is the maximum economic stripping ratio \$5.00/ 0.45 just over 11 cubic yards per ton Called a Break Even Stripping Ratio Complexities Warning Units of Stripping Ratio depend on convenience of the industry Coal overburden is normally light and machines are limited by volume in cubic ...

### Mine Planning Pdf Coal Mining Mining

coal mining methods underground opencast hybrid methods. ... break even strip ratios. stage 1 stage 2 stage 3 choice of mining method, technology and rated capacity. other key considerations ... quality/price of coal and stripping ratio not permitting deeper opencast projects.

### Can Indonesias Coal Mines Maximise Strip Ratios And Boost

Dec 16, 2016 Regional breakdown of break-even strip ratio and total cash costs at US\$73/t price scenario Top 16 mines on Q4 LoM strip ratio and cumulative marketable production curve Top 16 mines on breakeven LoM strip ratio and cumulative marketable production curve Percentage of change in strip ratio to break even relative to coal quality 4,200GAR at ...

### Influence Of Striping Ratio On Open Cast Coal Mining

break even stripping ratio example for coal mining. Oct 26, 2020 Stripping ratio is a term that is derived from the mining industry and is used in reference to the open-pit mining process. The stripping ratio method of calculating the profitability of the mining procedure is commonly used in the ore or coal mining process.

### Engin2503 Mining Engineering Assignment Help

For example, if stripping ratio is 41, it signifies that for mining 1 tonne of ore, it requires 4 tonnes of waste rock. Following are different types of stripping ratios that are used i) Volumetric / Geometric stripping ratio. ii) Break-even stripping ratio. iii) Limiting stripping ratio. iv) Instantaneous stripping ratio

### 11 Phases Of A Mining Project Elaw

of overburden generated by mining is enormous. The ratio of the quantity of overburden to the quantity of mineral ore (called the strip ratio) is usually greater than one, and can be much higher. For example, if a proposed mining project involves the extraction of 100 million

### Open Pit Mining Intechopen

Feb 17, 2021 Also, the ratio of the total volume of waste to the total volume of ore is defined as the overall stripping ratio. A lower stripping ratio means that less waste has to be removed to expose the ore for mining which generally results in a lower operating cost . The major types of stripping ratios are overall, instantaneous, and break-even.

### Economic Evaluation And Example Repost Basic Mining

Aug 11, 2019 80%. Mill Recovery (%) 90%. Step 1 Gather all relevant information together and logically outlay and analyse them including but not limited to. Ore grade and tonnage - 245,000m 3 at 1.5g/m3. Current Metal Price - USD1200.00/oz. Mill/Mining Recovery - 90%. Operational Expenditure - \$ 261,666.67.