break even stripping ratio example for coal mining

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

Oct 7, 2010 ... Examples of Surface Mines and Open Pits. – Coal. – Oil Sands. ○ Pit Wall Terminology ... Stripping Ratio, Cut Off Grade and Impact on Production. – Optimum Production ..... Break even stripping ratio = Underground mining...

Chat Online

analisis stripping ratio optimal berdasarkan perhitungan net present ...

29 Jun 2015 ... Break Even Stripping Ratio (BESR) adalah batas stripping ratio yang ... One of the important aspects in planning the coal mining is Stripping Ratio (SR). ... In this research, the calculation of Optimal Striping Ratio had been...

Chat Online

A technique for assessing ultimate open-pit mine ... - Lehigh Preserve

Jan 1, 1980 ... The proposed technique is called the SAMPLE method, which stands for. Sensitivity ... SAMPLE method is a practical way to evaluate ultimate open-pit mine limits in ... mineral and coal deposits except for those with highly variable grades ...... with a stripping ratio higher than the current breakeven stripping.

Chat Online

Rio Tinto Investor Seminar, London - 11 December 2013

Dec 11, 2013 ... producing and shipping coal earlier this year. ... thermal coal mine for just over a billion dollars. ... This is an outstanding achievement, and a great example of delivering a growth project on ... operating at below cash breakeven levels. ...... During 2017, the strip ratio is expected to drop further, to below 1:1.

Chat Online

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...

Chat Online

break-even stripping ratio | Britannica.com

Mining then ceases. The ratio of the amount of waste rock stripped to ore removed is called the overall stripping ratio. The break-even stripping ratio is a function...

Chat Online

Stripping ratio

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 volume of ore. For example, a 3:1 stripp...

Chat Online

Lecture 4 Calculating Stripping Ratios for Area Strip Mines.ppt

“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...

Chat Online

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 ..... example, the largest machines of the dragline models).

Chat Online

FMG site tour: breakeven cost reduction is sustainable | Wood ...

Improvements to FMG's wet processing facilities means breakeven cost ... Download sample report Share with a colleague ... The ability to mine lower grade ore allows FMG to use larger and lower cost truck and ... Having said that, we do expect costs to creep higher because of rising strip ratios and longer haul distances.

Chat Online

Determination of Ultimate Pit Limits in Open Mines Using Real ...

comprehensively described through the examples in a way that can be used by the mine ... Keywords: Open pit mining; Ultimate Pit Limits (UPL); Price uncertainty; ... Break-Even Stripping Ratio (BESR). ..... Shockley in 2007 evaluated a coal.

Chat Online

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

Keywords: Transition depth, tabulate deposit, stripping ratio, allowable, overall, ... Even though, Ug mining is more acceptable from environmental (for ... In relation to the practice of surface mining of coal deposits, it is common to describe ... To develop a pit design requires the establishment of the Break Even Stripping Ratio.

Chat Online

Small Surface Coal Mine Operators Handbook, United States ...

The small operator should understand his true unit costs and break-even stripping ratios in ordertostay solvent, particularly in a time of rapidly shift- ing costs and sales ...... identify commonly occurring problems in these hypothetical examples.

Chat Online

stability, capability, potential - Anglo American

Dec 9, 2014 ... other operational capabilities, the availability of mining and processing ..... actual waste stripping ratios to the average strip ratio for the relevant...

Chat Online

Stripping ratio Definition – Resource/Mining Dictionary | Casey ...

The stripping ratio refers to the amount of waste rock vs. ore (as opposed to ... a great deal, even over the same distance, if, for example, one deposit is uphill...

Chat Online

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...

Chat Online

Open-Cast-Mine-Planning - Mining and Blasting

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

Chat Online

INTRODUCTION TO MINING - CIENCIAVIVA.pt

as they are the means to mine a mineral deposit, even if no one enters into the ... Examples are vehicular, water, and sewer tunnels, plus underground storage ... mining equipment, which extracts the softer minerals like coal without the use .... determine the stripping ratio, the ratio of waste removed to ore recovered; it.

Chat Online

Open pit or block caving? A numerical ranking method for selection ...

In underground mining, block caving is the only method with the costs comparable to ... high stripping ratios, and environmental issues have become significant challenges facing ..... As an example, the predicted copper output from Rio .... This transition point from open pit to underground operation (break-even depth) is.

Chat Online

Lassonde Mineral Engineering Program - Skule

rock dumps in open pit mines. c) What are the important properties of waste that ... a) Calculate the break-even stripping ratio and overall stripping ratio; .... Formula Sheet For Final Exam , ... Medium digging material (coal, light “ch-t" soft ore) ll.

Chat Online

News