stripping ratio calculation in mining

Determining Stripping Ratio - Basic Mining Techniques

Apr 04, 2016  The maximum allowable Stripping Ratio (SR max) defines break even stripping ratio (BESR).This represents the highest possible units of waste that can be handled. If the SR exceeds the BESR then the operation will be uneconomical as the income generated by the ore is insufficient to offset the costs incurred in mining.

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(PPT) 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 SME’s “Surface Mining” were specifically referenced fStripping Ratio as a ...

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Lecture 4 Calculating Stripping Ratios For Area Strip ...

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

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Stripping Ratios: What are They and Why are They Important ...

Oct 30, 2018  A strip ratio, or stripping ratio, is an important measurement related to the open-pit mining process. It represents the amount of waste material, also known as

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(PDF) Stripping Ratios, Pit Limits Cutoff Grade ...

Stripping Ratios, Pit Limits Cutoff Grade Optimization. Download. ... Optimal production scale of open pit mining operations with uncertain metal supply and long-term stockpiles ... A review of cut-off grade policy models for open pit mining operations. By Iván Cárcamo. Optimum cut-off grade’s calculation in open pit mines with regard to ...

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stripping ratio calculation in mining

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

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What Is a Stripping Ratio? (with picture)

The stripping ratio method of calculating the profitability of the mining procedure is commonly used in the ore or coal mining process. In relation to its application in the mining of ore, the utility of the stripping ratio is the determination of the approximate ratio of waste material that must be moved in order to reach a certain ratio of ore.

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Stripping ratio - Wikipedia

In surface mining, stripping ratio or strip ratio refers to the amount of waste (or overburden) that must be removed to release a given ore quantity. It is a number or ratio that express how much waste is mined per unit of ore. The units of a stripping ratio can vary between mine types. For example, in coal mining the stripping ratio is commonly referred to as volume/weight.

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Whats the average stripping ratio of open pit mines around ...

A high grade orebody can support a high stripping ratio. A low grade ore body cannot support a high stripping ratio. Thus you may have a range of stripping ratios from 1:1 to 1:15 or even more.

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(PDF) Surface Mine Design

AVERAGE STRIP RATIO: Total waste divided by total ore within the ultimate pit. CUTOFF STRIPPING RATIO: Costs of mining a ton of ore and associated waste equals to net revenue from the ton of ore.

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Stripping Ratio Calculation In Mining

strip ratio in coal miningStripping Ratio Calculation In Mining. Strip ratio is very important in the mining world. . 10:1 strip ratio) That is coal mining or strip mining at its . to use the volume over volume calculation. Get Price And Support Online; Agoldenmomentfor mining - PwC. Agoldenmomentfor mining .

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3.2.4: Step 2 -- How Much of the Resource is a Reserve ...

Thus, given the stripping cost and the value of the exposed ore, we can calculate the breakeven or maximum stripping ratio. Stripping costs can be estimated reasonably well, based on the method of overburden removal and the region in which the mining is being conducted. We can find tables of data in handbooks to help us with this estimation.

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mining engineering: STRIPPING RATIO (S)

Jun 06, 2010  a. SR measures the amount of waste that needs to be removed to get an amount of ore, just as we mine it. Note the “amount”! b. This will differ depending on time span under consideration. * Initial studies (feasibility) – overall stripping ratio. * Current month – incremental stripping ratio.

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What is stripping ratio in mining? - Quora

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 wil...

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(PDF) Surface Mine Design

AVERAGE STRIP RATIO: Total waste divided by total ore within the ultimate pit. CUTOFF STRIPPING RATIO: Costs of mining a ton of ore and associated waste equals to net revenue from the ton of ore.

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Surface Mine Reserves

The program will first determine the lowest Instantaneous stripping ratio in the calculation area. The program will then determine in which direction the stripping ratio increases the least. If mining were to start in the area of lowest stripping ratio and then move one grid node in the direction of least increasing stripping ratio, the ...

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Surface mining planning and design of open pit mining

Jan 09, 2016  vii) Stripping Ratio The ratio is most commonly expressed as: Strip Ratio (SR) is the mass of waste to be mined to obtain one unit mass of ore. Waste (tons) SR = ----- Ore (tons) For example, a 3:1 stripping ratio means that mining one cubic meter of ore will require mining three cubic meters of waste rock.

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Common Basic Formulas for Mineral Processing Calculations

Mar 20, 2016  Pulp Densities. Pulp densities indicate by means of a tabulation the percentages of solids (or liquid-to-solid ratio) in a sample of pulp. This figure is valuable in two ways—directly, because for each unit process and operation in milling the optimum pulp density must be established and maintained, and indirectly, because certain important tonnage calculations are based on pulp density.

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What is STRIPPING RATIO? What does STRIPPING RATIO mean ...

Aug 24, 2017  theaudiopedia What is STRIPPING RATIO? What does STRIPPING RATIO mean? STRIPPING RATIO meaning- STRIPPING RATIO definition - STRIPP...

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Break Even Analysis - How to Calculate the Cut Off Grade ...

For conducting a mining project’s break even analysis, you first need to know about the operational expenses (OPEX).When the OPEX is known, you can calculate the mineral’s 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 isn’t available, I refer you ...

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Coal Ratio - an overview ScienceDirect Topics

Contour surface mining takes advantage of the low strip ratio coal reserves adjacent to the outcrop. Contour mining equipment includes a drill, loader, bulldozers, and trucks. The steps in contour mining begin with drilling and blasting a triangle shaped portion

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stripping ratio.pdf - After going through this lecture you ...

After going through this lecture you will be able to 1. list and define stripping ratios (K, C) 2. calculate various stripping ratios for given situations (C, Ap) 3. explain the influence of stripping ratios on planning decisions (A, S) 4. assess the most economic method of mineability of a deposit by surface mining or underground mining from the ...

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ECONOMIC ASSESSMENT AND MINE PRODUCTION

pit gold mining project named “Coriorcco Gold”, including a project description, an explanation of the main operational parameters, and an economic evaluation of the project. In the economic evaluation, variables as the breakeven cutoff grade (BCOG), stripping ratio

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A new method to confirm the economic and reasonable ...

【Abstract】 Economic rationality is currently open pit stripping ratio is well calculated by comparing the cost of industrial exploitation, the calculation does not take into account the safety of mining work well accidents, such as surface subsidence caused by enormous economic losses, but also did not consider the open-pit mining on the ecology of environmental damage and environmental ...

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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

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How do you calculate the stripping ratio? - Answers

Jun 06, 2009  Yes, a 3:1 stripping ratio means that mining one cubic meter of ore will require mining three cubic meters of waste rock.

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mining engineering: STRIPPING RATIO (S)

Jun 06, 2010  a. SR measures the amount of waste that needs to be removed to get an amount of ore, just as we mine it. Note the “amount”! b. This will differ depending on time span under consideration. * Initial studies (feasibility) – overall stripping ratio. * Current month – incremental stripping ratio.

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

4.1.7 CUT-OFF STRIPPING RATIO OR BREAK-EVEN STRIPPING RATIO The stripping ratio at which the cost of mining the ore and waste is equal to the revenue from that ore. The cut-off stripping ratio is the same as the break-even stripping ratio. This is the stripping ratio at which the net value of the last increment of ore is just sufficient to pay for the cost of removing the waste to release the ore.

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what is stripping ratio coal mining ppt

Stripping Ratio Calculation In Mining. Strip Ratio The stripping ratio is the most influential economic factor in the evaluation and planning of open-pit coal mines. It represents the volume of rock both above and within (partings) coal seams expressed in Bank Cubic Metres (BCMs) which must be mined to obtain 1 tonne of raw or clean coal. ...

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Surface Mine Reserves

The Instantaneous option will calculate the strip ratio using the strata thicknesses of the vertical strata column at each grid corner. The Accumulative method will start with the lowest strip ratio in the calculation area and keep adding the next best strip ratio areas, basically an accumulative strip ratio of the selected areas of the mine site.

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RESPONSE LETTER - SEC.gov

The deferred stripping method is generally accepted in the mining industry where mining operations have diverse grades and waste-to-ore ratios; however industry practice does vary. Stripping costs (including any adjustment through the deferred stripping asset) is treated as a production cost and included in its valuation of inventory.

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Coal Ratio - an overview ScienceDirect Topics

Contour surface mining takes advantage of the low strip ratio coal reserves adjacent to the outcrop. Contour mining equipment includes a drill, loader, bulldozers, and trucks. The steps in contour mining begin with drilling and blasting a triangle shaped portion

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What is STRIPPING RATIO? What does STRIPPING RATIO mean ...

Aug 24, 2017  theaudiopedia What is STRIPPING RATIO? What does STRIPPING RATIO mean? STRIPPING RATIO meaning- STRIPPING RATIO definition - STRIPP...

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Basic Mining Techniques

Feb 25, 2020  Stripping ratio and pit limit Gideon Gipmai Yowa (July, 2017) Senior Instructor, Mining Eng. Dept., PNG University of Technolog... Mining Regulatory Framework of Papua New Guinea Overview The mining industry in Papua New Guinea (PNG) is experiencing an unprecedented period of activity and growth and it is an exc...

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stripping ratio coal

Stripping Ratio Calculation In Mining - cz-eu . what is stripping ratio coal mining - Mine Equipments. Stripping ratio - Wikipedia, the free encyclopedia In mining, stripping ratio or strip ratio refers to the ratio of the volume of overburden (or waste material) required to

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TV:BIP Ratio Explained: The Economics of Oil Sands Mining ...

Apr 30, 2016  The strip ratio (SR) is the simplest measure of mining efficiency. Defined as the weight of overburden (or waste ore) divided by the weight of oil sands ore, a strip ratio of 2 is considered high but feasible if the ore grade is high enough. A better measure of mining economics is the TV:BIP ratio.

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stripping ratio.pdf - After going through this lecture you ...

After going through this lecture you will be able to 1. list and define stripping ratios (K, C) 2. calculate various stripping ratios for given situations (C, Ap) 3. explain the influence of stripping ratios on planning decisions (A, S) 4. assess the most economic method of mineability of a deposit by surface mining or underground mining from the ...

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Break-even stripping ratio Britannica

mining. 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

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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

More

How do you calculate the stripping ratio? - Answers

Jun 06, 2009  Yes, a 3:1 stripping ratio means that mining one cubic meter of ore will require mining three cubic meters of waste rock.

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Stripping Ratios: What are They and Why are They Important?

The stripping ratio of a deposit may be used, in part, to gauge how profitable it may be. “The lower the strip ratio the better, as a low strip ratio translates into a lower mining cost,” said Cormark Securities mining equity research analyst Stefan Ioannou. For instance, a project with a very high strip ratio likely will not be profitable.

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RESPONSE LETTER - SEC.gov

The deferred stripping method is generally accepted in the mining industry where mining operations have diverse grades and waste-to-ore ratios; however industry practice does vary. Stripping costs (including any adjustment through the deferred stripping asset) is treated as a production cost and included in its valuation of inventory.

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

between normal mining activities and a stripping activity. Management will need to identify the associated component of the ore benefiting from the stripping activity; and setting up the amortisation calculations, which will be more complex than what many companies are used to. Given the increased involvement of management

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Common Basic Formulas for Mineral Processing Calculations

Mar 20, 2016  Pulp Densities. Pulp densities indicate by means of a tabulation the percentages of solids (or liquid-to-solid ratio) in a sample of pulp. This figure is valuable in two ways—directly, because for each unit process and operation in milling the optimum pulp density must be established and maintained, and indirectly, because certain important tonnage calculations are based on pulp density.

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Net Asset Value in Mining Sell Side Handbook

Jul 20, 2017  Also note the strip ratios for each year (this is the amount of waste rock that is mined while mining the ore). The total material moved is calculated by multiplying the strip ratio with the ore depleted, then adding the ore depleted. A strip ratio of 10x and a depletion of 4.5 Mtonnes equates to 49.5 Mtonnes of material moved.

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Break Even Analysis - How to Calculate the Cut Off Grade ...

For conducting a mining project’s break even analysis, you first need to know about the operational expenses (OPEX).When the OPEX is known, you can calculate the mineral’s 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 isn’t available, I refer you ...

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Glossary of Mining Terms - Coal Education

A. Abutment - In coal mining, (1) the weight of the rocks above a narrow roadway is transferred to the solid coal along the sides, which act as abutments of the arch of strata spanning the roadway; and (2) the weight of the rocks over a longwall face is transferred to the front abutment, that is, the solid coal ahead of the face and the back abutment, that is, the settled packs behind the face.

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Earnings Stripping: Effective Tax Strategy to Repatriate ...

May 01, 2016  The excess interest expense cannot go below zero. USAco's U.S. federal interest deduction for its 2015 tax year is decreased to $450,000 ($560,000 ‒ $110,000).The disallowed interest expense may be carried over by USAco to future tax years if allowed. A corporation uses Form 8926, Disqualified Corporate Interest Expense Disallowed Under Section 163(j) and Related Information, to calculate ...

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Crypto mining profitability calculator minerstat

We are trying to add support for any coin that our clients are mining, as long as data on the coin is publicly available. From the more popular coins, we support: Bitcoin mining calculator, Ethereum mining calculator, Monero mining calculator, Dash mining calculator, Litecoin mining calculator, Zcash mining calculator, and Beam mining calculator.

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Overburden - an overview ScienceDirect Topics

The strip ratio is controlled by the height of the triangle portion of overburden removed. Controlling the ratio allows the unit cost of production to be largely controlled. The disadvantages of contour mining include the difficulty of maintaining the stability of steep, reclaimed hillsides and the limited width for effective operations on the ...

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Basic Mining Techniques

Feb 25, 2020  Stripping ratio and pit limit Gideon Gipmai Yowa (July, 2017) Senior Instructor, Mining Eng. Dept., PNG University of Technolog... Mining Regulatory Framework of Papua New Guinea Overview The mining industry in Papua New Guinea (PNG) is experiencing an unprecedented period of activity and growth and it is an exc...

More

Underground Mining Methods and Equipment

employed when the depth of the deposit and/or the waste to ore ratio (stripping ratio) are too great to commence a surface operation. Once the economic feasibility has been verified, the most appropriate mining methods must be selected according to the natural/geological conditions and spatial/geometric characteristics of mineral deposits.

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