A small deep-mining company has decided to recover
Assume the stripping method is simple side casting, without re-handling. Bucket fill factor 0.85 Cycle time 50 sec Monthly operating factor 0.70 = Overburden swell 30% Pit width 55m = 80m = 749 Dumping radius of the dragline Highwall angle of repose Spoil angle of repose Tub diameter = 37° = 25m If the mine makes $100 profit per tonne of coal ...
The Ultimate Guide to Nickel Mining Process
3. Calculate the economic reasonable stripping ratio according to the techno-economic indicator for open pit mining, and then determine the boundary stripping ratio based on the principles of boundary delineation. The boundary stripping ratio is usually between 4 and 10 (m3/m3): smaller values should be chosen if the mine is small, and vice ...
Stripping Ratios: What Are They and Why Are …
A strip ratio, or stripping ratio, is an important measurement related to the open-pit mining process.Put simply, the stripping ratio is the amount of waste material, also known as overburden ...
Coal and Coal Mining
Coal Mining Methods Surface mining – involves stripping off overburden to access coal resources. Overburden is the layers of soil and rock that overlie a coal bed. Surface mining is limited by stripping ratios: ratio of the volume of overburden (in cubic yards) to the quantity of coal (in short tons).
APPLICATION FOR LIMITED USE PERMIT TO ENGAGE IN …
3.Method of control and disposal of mine waster, rock, mineral scrap, tailings, slimes, and other material directly connected with the mining, cleaning, and preparation of mineral substances mined and includes all waste materials deposited on or in the permit area from any source. Updated 10/2024
IAS 16 — Accounting for production phase stripping costs in the mining
The Committee discussed the final draft of the proposed Interpretation on accounting for stripping costs in the production phase. Description of a stripping campaign. The draft Interpretation describes a stripping campaign as that which "...will typically be planned in advance and form part of the mine plan.
What is Strip Mining?
Strip mining is commonly used to extract thin coal seams and lignite that are very close to the ground surface. Once the mineral seam buried underneath the soil and rocks are revealed through drilling and explosives, the coal resources will be mined systematically along the strips, and the overburden removal can be easily …
Strip Mining
Strip mining is a method of extracting coal reserves by removing overburden in rectangular blocks known as pits or strips, using equipment like draglines or continuous excavators to …
Beginner's Guide to Strip Mining | An …
Strip mining uses the largest mining machines on Earth and primarily focuses on removing coal and lignite, a type of brown coal. During the initial stage of a strip mining operation, workers remove all surface vegetation …
What Is Surface Mining? | Types of Surface Mining
There are 5 main types of surface mining, which are used in various degrees and for different resources. These mining categories are: strip mining, open-pit mining, mountaintop removal, dredging and high wall mining. All methods of surface mining will remove the waste material, or overburden, above the desired resource.
Strip Mining Types, Environmental Impacts and …
Strip mining, also known as open-pit mining, surface mining, or strip-cut mining, is a method of extracting valuable minerals or other geological materials from the Earth's surface. This mining technique involves the removal of layers of soil, …
Mining Methods-Part I-Surface mining
Topic 5: Mining Methods Part I-Surface mining Hassan Z. Harraz hharraz2006@yahoo 2010- 2011 This material is intended for use in lectures, presentations and as handouts to students, and is provided in Power …
Mining and Stripping of Open Pit | SpringerLink
Mining and stripping of open pit is the method of stripping rocks and mining ores from open-pit mine according to a certain mining order. In open-pit mining, there is little difference between the process of stripping rock and mining ore. The equipment on a working bench can be used for both mining and stripping. As the central link in the open ...
Dragline Stripping Methods Flashcards
Study with Quizlet and memorise flashcards containing terms like Stripping method depends on:, Single Seam Dragline Stripping Methods, Box Pits and others. ... Side Casting-Advance Benching-Extended Benching-Pull Back Method-Two Dragline Intermediate Extended Benching-Terrace Mining-Roll-Over Mining.
Types of Surface Mining | American Mine Services
In particular, surface mining is used to retrieve sand, gravel, stones, coal, iron and other metals. There are five recognized types of surface mining, each with specific variations depending on the minerals being extracted. These include strip mining, open-pit mining, mountaintop removal, dredging and highwall mining. Why Choose Surface Mining?
Strip mining | Surface Mining, Reclamation & Restoration
strip mining, removal of soil and rock (overburden) above a layer or seam (particularly coal), followed by the removal of the exposed mineral. The common strip-mining techniques are classified as area mining or contour mining on the basis of the deposit geometry and type.
What is Strip Mining? Methods and Impact | Environment …
Strip mining implicates the stripping away of soil and rocks to access the coal beneath. If a mountain is standing in the way of a coal seam within, it will be exploded or demolished – successfully leaving a damaged landscape and distressing ecosystems and wildlife habitat.. 300,000 acres of pristine hardwood forest has been destroyed by mountaintop removal …
Understanding When Costs Associated with Overburden and …
In this instance, the mining company should consider on a case-by-case basis whether the subsequent stripping cost is to be expensed as OPEX or should be capitalised. Micon's mining engineers are skilled at scheduling open pit stripping to optimize NPV while meeting the constraints of fleet and process plant capacity.
Strip Mining
Coal Mining, Design and Methods of. Andrew P. Schissler, in Encyclopedia of Energy, 2004 2.3 Strip Mining. Strip mining is employed in coal reserves where the overburden is removed in rectangular blocks in plan view called pits or strips. The pits are parallel and adjacent to each other. Strip mining is fundamentally different from contour or area mining on how the …
Methods of Mining and Formation of Minerals | High …
1. Open Cast Mining - Method of extracting minerals which are near the earth's surface. - The types of open cast mining include: a) Stripping - Stripping off of the unwanted material lying on top of the mineral deposit and then digging to remove the mineral bearing rock if it's soft or if it's hard explosives may be used to loosen it and then huge power shovels are employed to dig up …
IFRIC 20 — Stripping Costs in the Production Phase of a Surface Mine
IFRIC 20 considers when and how to account separately for the benefits arising from the removal of mine waste materials ('overburden') to gain access to mineral ore deposits, as well as how to measure these benefits both initially and subsequently. IFRIC 20 was issued on 19 October 2011 and applies to annual periods beginning on or after 1 January 2013.
MineChem on LinkedIn: #mining #gold_mining #mining…
Mining Methods: The techniques used for mining, such as truck and shovel or dragline, can influence stripping ratio. Ore Grade: The concentration of the valuable mineral in the ore. Higher-grade ...
Quarrying Mining Method Flashcards
Quarries usually contract out the stripping operation as quarry equipment is not normally used for stripping overburden. Stripping methods: •Drilling: auger (for weak rock), roller-bit rotary (average rock), percussion drills (hard rock) •Blasting: ANFO or rip in case of soil •Excavation: blasted overburden can be removed using dragline, scraper (for soil), or front-end …
Factors in Mining Method Selection Flashcards
Study with Quizlet and memorize flashcards containing terms like WHAT ARE THE FACTORS IN MINING METHOD SELECTION, Size, Shape and more. ... stripping ratio. SPATIAL CHARACTERISTICS OF THE DEPOSIT • Size • Shape • Attitude • Depth • Regularity of the ore boundaries • Existence of previous mining.
Surface Mining Methods and Systems | SpringerLink
The main mining methods may be briefly classified as Strip Mining, Terrace Mining, and the Conical Pit Mining (next section). 8.1.1 Strip Mining. There are two main …
Understanding Open Pit Mining: Key Terms and Concepts
The indicated stripping ratio for an open pit mine operation that results in a break-even cost differential between the two mining methods is determined as follow: BESR = = 4.86 tons waste:1 ton ore Only that part of the orebody where the stripping ratio does not exceed 4.86 tons waste: 1 ton ore should be mined by open pit methods.
(PDF) Open Pit Mining | Hani Alnawafleh
The main topics that will be discussed in this chapter will include an introduction into the general features of open pit mining, ore body characteristics and configurations, stripping ratios and stripping overburden methods, mine elements and parameters, open pit operation cycle, pit slope angle, stability of mine slopes, types of highwall ...
Understanding the Stripping Ratio in Surface Mining
Mining engineers and planners use the stripping ratio to assess the viability of a mining project and to determine the most suitable mining equipment. The ratio guides decisions on whether a surface mining operation is economically feasible and helps in the design of open-pit mines by delineating the point at which the operation becomes ...
a Surface Mine Stripping Costs in the Production …
During the development phase of the mine (before production begins), stripping costs are usually capitalised as part of the depreciable cost of building, developing and constructing the mine. ... depreciated or amortised on a systematic basis, usually by using the units of production method, once production begins. A mining entity may continue ...
6 Common Blasting Methods in Open Pit Mining
Deep hole blasting is the blasting method that uses drilling equipment to drill deeper holes as the charge space of mining explosives. The deep hole blasting in open pit mine is mainly bench blasting. Deep hole blasting is a kind of blasting method which is widely used in open pit mine. The depth of the blast hole is usually 15 to 20m.