Untitled. mines. Give an example calculation which shows the size and number .. 3.b) How have mine productivity, maintenance of stripping ratios, grade control and other parameters ... Some formulae that may or may not be of use. R = weight.**formular for calculating strip ratio in mining**,Glossary of Mining Terms - SECEX-99 15 glossary.htm EX99.3 - GLOSSARY OF MINING TERMS . the roof or back of an underground opening for the purpose of determining grade. .. Stripping ratio - The ratio of tonnes removed as waste relative to the number of tonnes of . as opposed to a cut value which has been reduced by some arbitrary formula.

Mar 19, 2015 . . stripping ratio and consequently wastes generated from mining .. Equation (5) shows constraints in mining, milling and marketing capacity.

Feb 11, 2018 . calculating NPV (see Equation (2)), one will find changing NPVs, ... marginal stripping ratio, defined as the maximum allowable waste:ore ratio.

of mining, then agriculture and mining continue to supply all the basic resources used by ... Valuate deposit (Hoskold formula or discount .. determine the stripping ratio, the ratio of waste removed to ore recovered; it may range from as high.

This handbook on surface strip coal mining serves as a general introduction to the subject of mining, specifically ... (BESR) and multiple seam mining incremental stripping ratios . The revenue portion of the equation can be written as;.

Third, calculate the net present value of that mining asset in Excel. And finally, run a ... So, at 2017th you can go ahead and we are going to build this formula right. By selecting . I've also pulled for us the Strip ratio at 2 times. 5 Mill capacity.

formular for calculating strip ratio in mining,### Stripping Ratios: What are They and Why are They Important? | INN

Oct 30, 2018 . As a result, mining companies calculate strip ratios for open-pit projects well before they enter development and production, and seek out.

Discounting of marginal strip ratios is based on adding the common formula with an average mean discount coefficient represented by a correlation of mining.

Mining operations exploit mineral deposits, processing a portion of the extracted material .. To understand equation 3-14 suppose the stripping ratio, Sr, was 3.

In combined open-pit and underground mining, it is likely that block, mass, or panel . The first method for such evaluation was the 'allowable stripping ratio', which . stripping ratios theory, which generated some formulae for calculating the.

Mar 30, 2017 . formula: CuEq = Copper + (Contribution of Molybdenum) + (Contribution ... waste, yielding a life of mine waste to ore stripping ratio of 2.1 to 1.

Jul 25, 1977 . calculations that make up the portion of this preliminary report identified ... Knowing the cut-off grade, stripping ratio, and the ultimate pit slope angle, the ... design is as follows (based on the formulas of R.Le Ash):. Figure 1.

Oct 19, 2011 . 6.2 Formula-based allocation between inventory and . average life-of-mine stripping ratio approach, while others expense such costs as.

of OP mining is the Stripping Ratio (SR), by which is on the whole meant the volume of .. In the deduced formula (6), in addition to the waste rock and ore.

In the same way, the maximum allowable stripping ratio is given by .. Substituting these variables in the profit function formula, a direct relationship between.

As a general rule for surface coal mining, strip ratio always increases as .. burden factor equation ensures that the overall burden is the result of a good match.

Nov 15, 2011 . The adjustment factor can be calculated as per equation 1, ... in the saleable strip ratio calculation dictating the preliminary mine design.

Jan 1, 1980 . desirable stripping ratio is just .at the point where the ore in the increment . the ore and waste tonnages to express the formula in terms of the.

Stripping Ratio as a Fundamental Ability to surface mine depends on the value of the ore being high enough to offset the . 9 The Coal Area Strip Mine Formula

formular for calculating strip ratio in mining,### A technique for assessing ultimate open-pit mine . - Lehigh Preserve

Jan 1, 1980 . desirable stripping ratio is just .at the point where the ore in the increment . the ore and waste tonnages to express the formula in terms of the.

Apr 30, 2016 . The strip ratio (SR) is the simplest measure of mining efficiency. . Replacing OSw with Equation 1 and assuming the SG of bitumen = 1:.

(stripping ratio) makes mining uneconomic. For minerals found .. not to incur economic loses, and it is calculated by the following formula: = .

Stripping Ratio as a Fundamental Ability to surface mine depends on the value of the ore being high enough to offset the . 9 The Coal Area Strip Mine Formula

(stripping ratio) makes mining uneconomic. For minerals found .. not to incur economic loses, and it is calculated by the following formula: = .

stripping ratio means that mining one cubic meter of ore will require mining three ... Thus, the price component in the equation is largely determined by others.

Mine waste base area for selected ore tonnages and stripping ratios at .. The following equation, in cubic meters, shows the method for calculating swell factor:.

of OP mining is the Stripping Ratio (SR), by which is on the whole meant the volume of .. In the deduced formula (6), in addition to the waste rock and ore.

1CAMCE Mining and Tunneling, Lougheed Hwy, Burnaby, Canada . stripping ratio, representing the fundamental nature of resource and economic . The overall ore grade at benches is calculated according to operating cost model provided, while cutoff ... calculated using the formula presented in this paper, then.

Oct 30, 2018 . As a result, mining companies calculate strip ratios for open-pit projects well before they enter development and production, and seek out.

formular for calculating strip ratio in mining,### (PDF) Economico-Mathematical Analysis of Transition from Open-pit .

In order to determine transition depth from open-pit to underground mining on the basis of .. stripping ratio can be determined due to Equation 2 (Taylor, 1972):.

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