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

stripping costs A recent KPMG survey revealed that many companies capitalise costs often using an average life-of-mine stripping ratio approach while others expense such costs as incurred or follow the US GAAP approach of allocating all production stripping costs to inventory produced in the period

Aug 26 2010· IFRIC 20 considers when and how to account separately for these two benefits arising from the stripping activity as well as how to measure these benefits both initially and subsequently IFRIC 20 only deals with waste removal costs that are incurred in surface mining activity during the production phase of the mine production stripping costs

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

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

Strip itself is easily understood in coal mining where you may have 20 metres of overburden before you expose a 2 metre coal seam In this case it is a simple to just divide the length of the overburden by the length of the coal seam 20 2 = 10 1 strip ratio That is coal mining or strip mining at its core

Easy profit maximization method for open-pit mining Author links open overlay panel C Dinis da Gama the tonnages of ore and waste rock stripping ratios and profit estimates for different production levels If cost evaluations of essential mine operations are available such as ore mining waste removal ore concentration transportation

Mulliple-scam mining is a very important phase of the stripping industry in the United States today As in the casc of conventional stripping multiple-seam slrip-miuing is classified either as area or contour mining Area strip-mining is practiced on relatively flat terrain A box cut is made

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 …

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

Jan 09 2016· Surface mining planning and design of open pit mining 1 This material is intended for use in lectures presentations and as handouts to students and is provided in Power point format so as to allow customization for the individual needs of course instructors Permission of the author and publisher is required for any other usage

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

Oct 26 2019· 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

meaning ASR Accordingly the limiting ratio is never apparent in the year to year operating instantaneous stripping ratios Instantaneous Stripping Ratio ISR is the real relation of the removed waste volumes and the mineral exploited in the pit during a certain and definite period of time

Stripping Ratio Calculation In Mining formular for calculating strip ratio in mining Stripping Ratios What are They and As a result mining companies calculate strip ratios for open-pit projects well before they enter development and production Get Price And Support Online Calculating Stripping Ratios for Area Strip Mines Mnge

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