break even stripping ratio example for coal mining

modeling for the steady state production of large open cast mines

It is generally expressed in the proportion of over burden to coal/mineral removed ... Factors which play a great role in the stripping ratio calculation are: ... Break even stripping ratio = (mining cost per tone of minerals by u/g method – open cast.


Get Price

An approach towards ascertaining open-pit to underground ...

of OP mining is the Stripping Ratio (SR), by which is on the whole meant the volume of ... In relation to the practice of surface mining of coal deposits, it is common to ... To develop a pit design requires the establishment of the Break Even Stripping Ratio ... mentioned equivalent, relation (formula) 5 is proved and deduced.


Get Price

Highwall Mining: Design Methodology, Safety and Suitability

by the stripping ratio for surface mining operations is reached. ... coal fields and West ia make the highwall mining method the preferred and often .... Using Equation 3, the maximum bench width from the break-even analysis will be lim-.


Get Price

Stripping Ratios, Pit Limits & Cutoff Grade Optimization ...

In strip coal mining operations, the following are sometimes seen: (ft) Thickness ... Break-even stripping ratio: The instantaneous stripping ratio at the point where the ... 3 Example It will be assumed that: -the pit is deepened in bench height...


Get Price

12_Stripping Ratios & Pit Limits - 1 Introduction to Mining ...

In strip coal mining operations, the following are sometimes seen: (ft) Thickness ... Break-even stripping ratio: The instantaneous stripping ratio at the point where ... Stripping Ratio Example It will be assumed that: ¡ the pit is deepened in bench...


Get Price

determination of ultimate pit limits in open mines using real option ...

comprehensively described through the examples in a way that can be used by the ... Break-Even Stripping Ratio (BESR). ..... Shockley in 2007 evaluated a coal.


Get Price

Mine Plan Justification - Whitehaven Coal

The purpose of this Mine Plan Justification document is to describe the process ..... A breakeven strip ratio was estimated using costs and product assumptions as ..... Metallurgical factors; calculation of coal products quantities and products.


Get Price

Open-Cast-Mine-Planning

3) Break even Stripping ratio/cost economic analysis. 4) Production ... 2) Matching the mine capacity with the targeted output of coal production & OB removal.


Get Price

INTRODUCTION TO MINING

that can be utilized as fuels, such as coal, petroleum, natural gas, coalbed methane ... as they are the means to mine a mineral deposit, even if no one enters into the ... The first challenge for early miners was to break the ore and loosen it from ..... determine the stripping ratio, the ratio of waste removed to ore recovered; it.


Get Price

Chapter 9: Coal - Environmental Protection Agency

Illustrative examples are included of the step-by-step approach employed in ... aggregations of coal-mining areas that supply one or more coal grades. ...... illustration of the break-down of costs included in the mine costing models, Figure 9-3 .... Stripping Ratio = Overburden Yard / Coal Production .... even a barge facility.


Get Price

Stripping ratio - Wikipedia, the free encyclopedia

For example, a 3:1 stripping ratio means that mining one cubic meter of ore will require mining three cubic meters of waste rock. Stripping ratios are typically...


Get Price

Anindita Nugraha Pratama | LinkedIn

•Manage the Coal getting work to ensure quality of coal extracted is meet the standard ... Create mining equipment calculation and perform mining equipment efficiency ... and planning as well as computation BESR (break-even stripping ratio).


Get Price

SURFACE MINING METHODS

Typical examples of this type of mining are the larger tonnage coal mining ..... What is meant by "break-even stripping ratio" and what factors would you consider...


Get Price

Underground coal mining in india - SlideShare

Feb 27, 2013 ... Underground coal mining in India – Technological option and ... the open pit mines suffering from uneconomical stripping ratio. .... The most glaring example in this regard is failure of powered ..... This is the reason, they produce just above the break even production and in many mines theyproduce...


Get Price

Coal Resource Availability, Recoverability, and Economic ... - USGS

between an analysis using a break-even economic hurdle and inclusion of at least 1 or ... For example, surface mining is modeled by standard methods ..... much higher mining costs (thinner beds, higher stripping ratio, and lower coal quality)...


Get Price

Surface Strip Coal Mining Handbook - sacea

This handbook on surface strip coal mining serves as a general introduction to the subject of mining, specifically ..... Fundamental stripping ratio concepts, the break even stripping ratio ... The revenue portion of the equation can be written as;.


Get Price

Chapter 3. Mining Extraction - ia Center for Coal & Energy ...

coal mining industry, (2) outlines the methods of .... a stripping ratio calculation, based on the price of coal per ... the break-even stripping ratio for surface mining.


Get Price

here - PT SMG Consultants

Simple Example Deposit. OB Depth 30m. Coal ... _. _. Density. Coal. Volume. Coal. Volume. Overburden. Ratio. Strip ... In our example. • Sale Value for 5600 ... Coal Mining including overheads $2.50/t ..... Optimum pit is break even at its limits.


Get Price

What Is a Stripping Ratio? (with picture) - wiseGEEK

Stripping ratio is a term that is derived from the mining industry and is used in ... of the mining procedure is commonly used in the ore or coal mining process. ... For example, if the mining company must extract one part of ore to three and a half ... to break even, it stands to reason that the company will seek to look for mining...


Get Price

break-even stripping ratio | Encyclopedia Britannica

The break-even stripping ratio is a function of ore value and the costs involved. ... cost of recovering a ton of coal from the seam by surface mining and the cost of...


Get Price

Coal Resource Evaluation And Models - International Journal of ...

situ Coal as 20.5 Tonnes with a strip ratio of 18.1. Index Terms: ... from the mine at Okaba, none of these mines is currently operating. Coal exposed .... resource. The coal thickness for example decreases to the .... for a quick break even margin.


Get Price

First Impressions: Production stripping costs - KPMG

Oct 19, 2011 ... average life-of-mine stripping ratio approach, while others expense such costs as .... that may not be embedded in an ore deposit, for example coal. ... Even companies with a policy of deferring production stripping costs when...


Get Price

Methods In Planning For Open Pit And Underground Mines - Austrade

OZMINE 2013. AUSTRALIAN MINING CONFERENCE AND EXHIBITION ... Works mainly for the mining industry. • Is owned ... BREAK EVEN STRIPPING RATIO.


Get Price

Accounting for stripping costs in the production phase - IFRS

coal) and open pit mining (e.g. for copper) are types of surface mining. Surface. 1 The papers ..... (using the same formula as the average strip ratio) calculate an actual strip ratio of .... ore recovered, in order for the mine to break even. This ratio...


Get Price

GeoloGy and mine planninG for coal and stratified deposits - GEOVIA

data-intense coal projects. ... generate a final pit that is break even or optimal at its limits, using the ... provides both vertical and inclined strip ratio calculations.


Get Price

Calculating Stripping Ratios for Area Strip Mines Mnge 315

"Elements of Practical Coal Mining" and SME's "Surface Mining" were ... $5.00/ 0.45 = just over 11 cubic yards per ton; Called a "Break Even Stripping Ratio" ... Some mining costs are fixed (many administrative features for example); Others...


Get Price

Coal Market Trends Research Paper - Carbon Tracker Initiative

Sep 22, 2014 ... "breakeven coal price" (which includes capital costs and economic ... ratings – provide the context for the 60 thermal coal producers in our sample ...... Figure 6: Queensland coal mining "strip ratios" by product, FY91 -‐ FY14E.


Get Price

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

Mining may cease in a particular area, for example, where the coal seam becomes ... Even after replacement and mechanical compaction, the volume of the material ... and the economics of mining changed to allow greater stripping ratios. ..... Blasting activity and subsidence from underground mining may break up the...


Get Price

An Approach Towards Ascertaining Open-Pit to Underground ...

These formulas resulted based on the allowable and overall stripping ratios. ... Even though, Ug mining is more acceptable from environmental (for instance, Ug will ... In relation to the practice of surface mining of coal deposits, it is common to ... pit design requires the establishment of the Break Even Stripping Ratio (BESR).


Get Price

Presentation Title, Arial bold, size 36 - University of Saskatchewan

Oct 7, 2010 ... Examples of Surface Mines and Open Pits. – Coal ... Stripping Ratio, Cut Off Grade and Impact on Production ... Strip mining exposes the coal by removing the overburden in long cuts ..... Methods. Break even stripping ratio =.


Get Price