Opencast Mining Costs By Stripping
Cost Models of Theoretical Mining Operations | CostMine
This mine is an open pit mine producing 5,000 tonnes ore and 5,000 tonnes waste per day. Rock characteristics for both ore and waste are typical of those of granite or porphyritic material. Operating conditions, wage scales, and unit ps are typical for western U.S. mining operations. All costs listed are in 2012 US$.
IAS 16 — Stripping costs in the production phase of a mine
The Committee discussed a ing draft of a draft Interpretation on accounting for stripping costs in the production phase of a mine. IAS 16 — Accounting for production phase stripping costs in the mining industry; 04 Mar 2010. The IFRIC continued its deliberations on the accounting treatment for stripping costs during the production stage
(PDF) Mining Methods: Part I-Surface mining
Relatively thin overburden (0-50 m maximu m otherwise stripping ration and cost of stripping becomes t oo high ). Regular and cons tant surfac e topography and coal layers (not mor e than 20 º
Open-Pit Mining MethodsAdvantagesIssuesTypesUsageCostTechnologyOperationConstructionServEarly historyOther factors influencing the cho between open-pit and underground methods may be inferred from the advantages and disadvantages of open-pit mining, some of which are listed below. In specific instances consideration of these may affect the cho of method or result in revision of pit limits established by cost estimates based upon stripping-ore ratios. Among the advantages of open-pit mining are its flexibility, the ability to obtain mass production with it, and the ease with which rate of production
(PDF) COST ESTIMATION FOR OPEN PIT MINES: TACKLING COST
COST ESTIMATION FOR OPEN PIT MINES: TACKLING COST UNCERTAINTIES Stripping ratio . Tons of material mined per day Sontamino P., Drebenstedt C: A System Dynamics Model Of Mining Costs
Open Pit Mining Pros & Cons | Sciencing
Open pit mining is also called strip mining because the extraction process destroys vegetation, reduces habitats and pollutes the environment. Mining proponents argue that the process is more efficient, cost effective and safer than shaft mining. Environmental regulations help mitigate damage.
Stripping costs — AccountingTools
Oct 22, 2018 · Stripping costs are those costs incurred when removing overburden or waste materials in order to obtain access to a commercially-producible ore body. If so, and the activity provides better access to the deposit, then under GAAP the cost should be capitalized along with other development costs
ESTIMATION OF CAPITAL COSTS FOR ESTABLISHING COAL
1.2.1. Stages in the life of a mine 1 1.3. Surface mining 4 1.3.1. Strip/opencast mining 5 1.3.2. Terrace mining 7 1.3.3. Open pit mining 8 1.4. Underground coal mining 9 1.4.1. Room and pillar 9 1.4.2. Longwall 12 1.5. South African coal mining context 13 1.5.1. History of the South African coal mining industry 13 1.5.2.
Surface Mining Methods and Equipment
UNESCO EOLSS SAMPLE CHAPTERS CIVIL ENGINEERING Vol. II - Surface Mining Methods and Equipment - J. Yamatomi and S. Okubo ©Encyclopedia of Life Support Systems (EOLSS) SURFACE MINING METHODS AND EQUIPMENT J. Yamatomi and S. Okubo University of Tokyo, Japan Keywords: Mining method, surface mining, open pit mining, open cast mining, placer mining, solution mining, leaching, stripping
IFRIC 20 — Stripping Costs in the Production Phase of a
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').
Stripping Ratios: What are They and Why are They Important
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 overburden, that must be moved in
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 three tonnes of waste rock. Stripping ratios are typically reduced to show the volume of waste removal required to extract one unit
OPEN CAST MINE PLANNING - Mining and Blasting
3) Break even Stripping ratio/cost economic analysis 4) Production targets 5) Degree of mechanization 6) Environmental conditions & the township, land reclamation, etc 7) Avaiility of water, power, skilled our, transport facilities, Steps in Opencast mining 1) Determination of mine boundaries: Exclusion of: high SR area (deep
Equipment Selection for Surface Mining: A Review
A surface mine contains pits with mineral endowed rock (or ore). We extract ore that lies within the upper layer of the earth, from surface mines (Fricke, 2006) . This ore can include metals such as iron, copper, coal and gold. There are several methods of surface mining, including open-pit, stripping, dredging and mountain-top removal.
Surface Coal Mining Methods in Australia
Surface Coal Mining Methods in Australia 5 2. Open cut mining methods strip mining Large-scale open cut coal mining operations commenced in Australia in mid 1960s and since then there has been significan t developments in this method of mining. The mines are now operating at significantly higher annual tonnages, growing deeper, more complex and
New on the Horizon: Production stripping costs
Stripping Costs in the Production Phase of a Surface Mine, which was published by the IASB on 26 August 2010. The text of this publication is referenced to the draft interpretation by way of references in the left-hand margin.
Open-pit mining - Wikipedia
Open-pit, open-cast or open cut mining is a surface mining technique of extracting rock or minerals from the earth by their removal from an open pit or borrow.. This form of mining differs from extractive methods that require tunnelling into the earth, such as long wall mining.Open-pit mines are used when deposits of commercially useful ore or rocks are found near the surface.
Mining Cost Serv: Free Data for Mine Cost Estimates
Industry Standard for Mining Cost Estimating Free Data & Samples Examples of Mining Cost Model, Mining Taxes, Smelting, Equipment, Electric Power and Labor Costs. Mining Cost Model. 5,000 Tonne per Day Open Pit Mine Model. This mine is an open pit mine producing 5,000 tonnes ore and 5,000 tonnes waste per day. The total resource to be mined is
Opencast coalminingatKrielColliery - SAIMM
Planning ofthe Opencast Mine Percentage Extraction When the opencast operations were included inthe planning, the mining area changed its boundaries, but the aerial extent remained almost constant and amounted nowto8901,5ha.Thereserves areshown in Table I,which givesonlyanindication, sincetheareas >:electedforunderground mining and forthe combined
The Advantages of Open Pit Mining | Sciencing
Open pit mining does offer some advantages over traditional deep shaft mining. Pit mining is more cost effective than shaft mining because more ore can be extracted and more quickly. The ing conditions are safer for the miners because there is no risk of cave in or toxic gas. Open pit mining
Overburden Removal - Surface Mining
Jul 21, 2017 · Overburden Removal - Surface Mining 1. 6.3 Overburden Removal GEORGE E. AIKEN JOHN W. GUNNETT GENERAL OVERVIEW Any evaluation of a specific need for overburden removal requires that the engineer first be aware of the various des- ignations ofoverburden, the state-of-the-art removal systems, and methods to transport these materials to permanent dep- osition areas.
Returning Mined Land to Productivity Through Reclamation
Thus, mining and restoration can be completed continuously and progressively throughout the life of a mine. The costs associated with these restoration activities can be substantial: One estimate suggests US$1.5 million per mine, although varied mine sizes, regulatory regimes, or the presence of legacy reclamation costs could result in wide
Open-pit Mining, Opencast Mining, Open-cut Mining, Strip
Open-pit mining, also known as opencast mining, open-cut mining, and strip mining, means a process of digging out rock or minerals from the earth by their elimination from an open pit or borrow.
Stripping Ratio | Mineral Production Activities
6. Stripping ratio . The main factor in designing a n open pit mine, which largely determines the cost of mining, is the stripping ratio.. Stripping is the removal of waste rock from above and around the orebody. Stripping ratio is defined as the tonnage of waste rock to be mined, divided by the tonnage of ore to be mined from the pit.
The economics of extended pre-strip stripping
2013 Coal Operators’ Conference The University of Wollongong 14 15 February 2013 355 THE ECONOMICS OF EXTENDED PRE-STRIP STRIPPING Retief Nel1and Mehmet S Kizil ABSTRACT: Waste stripping involves the most costly processes for any given open cut coal mining operation, As such, it is fundamentally important to optimise material scheduling and the sequences
Environmental Risks of Mining
See the green mining page for more information. Cost of inaction/action. If no action is taken to remediate the many environmental problems inherent to modern mining, the end cost for governments and communities would be devastating. Already mines in China release 9,600 to 12,000 cubic meters of toxic gas containing flue dust concentrate
What Are the Disadvantages of Opencast Mining? | Reference
Opencast mining, also known as surface mining or strip mining, has disadvantages that include disturbance of the environment and local ecosystems, exposure of radioactive elements and contamination of freshwater sources. The use of heavy machinery and blasting techniques also create environmental pollution.
Stripping Ratio - YouTube
Oct 13, 2019 · STRIPPING RATIO- Stripping Ratio can be defined as, “It is the ratio between waste & Ore/Mineral." Opencast mining -: Blasting overburden to access coal in a strip mine - Duration
Surface mining - Wikipedia
Surface mining, including strip mining, open-pit mining and mountaintop removal mining, is a broad category of mining in which soil and rock overlying the mineral deposit (the overburden) are removed, in contrast to underground mining, in which the overlying rock is left in place, and the mineral is removed through shafts or tunnels.. Surface mining began in the mid-16th century [dubious
IFRS First Impressions - KPMG
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.
Coal mining - Choosing a mining method | Britannica
Coal mining - Coal mining - Choosing a mining method: The various methods of mining a coal seam can be classified under two headings, surface mining and underground mining. Surface and underground coal mining are broad activities that incorporate numerous variations in equipment and methods, and the cho of which method to use in extracting a coal seam depends on many
Surface mining - LinkedIn SlideShare
Oct 16, 2015 · SURFACE MINING • Surface mining is done by removing (stripping) surface vegetation, dirt, and, if necessary, layers of bedrock in order to reach buried ore deposits (or) surface mining is the process of extraction of minerals by removal of overburden . • Overburden is the rock or waste material which is lying on the mineral to be owned .
v118n5a1 Optimization of the load-and-haul operation at an
The opencast coal mining complex extends over two mines within the Witbank Coalfield, to the south of Emalahleni, Mpumalanga Province. The target pit is currently a mature opencast strip-mining operation that extracts multi-layered coal seams, exercising a throw-over method to the low-wall side to the north and advancing in a southerly
DESIGN OF STABLE SLOPE FOR OPENCAST MINES
number of opencast mines, whether large or small, are now days reaching to deeper mining depths. As a result analysis of stability of operating slopes and ultimate pit slope design are becoming a major concern. Slope failures cause loss of production, extra stripping cost for
IFRIC 20, policy for deferred stripping costs, mining
Rio Tinto plc Annual report 31 December 2019 Industry: mining 1 Principal accounting policies (extract) (h) Deferred stripping (note 14) In open pit mining operations, overburden and other waste materials must be removed to access ore from which minerals can be extracted economically. The process of removing overburden and waste materials is referred