That means mining 1 cubic meter of ore would require mining 3 cubic meters of overburden. The stripping ratio of a deposit may be used, in part, to gauge how profitable it may be. "The lower the strip ratio the better, as a low strip ratio translates into a lower mining cost," said Cormark Securities mining equity research analyst Stefan ...

Coal Mine on the stripping ratio in the mining pr ocess of the second mining area, in the second mining ar ea, multiple calculation sections are estab lished at a certain step distance from the ...

The document discusses stripping ratios, pit limits, and cutoff grade optimization in open pit mining. It provides the following key points: 1) Stripping ratios refer to the amount of waste that must be removed to access a given quantity of ore. …

methods are contour stripping, area stripping, and strip mining. 2.1 Contour Stripping Coal seams and associated overburden can outcrop on the edges of hills and mountains. Figure 3 shows a cross-section of a typical contour mine plan. Contour surface mining takes advantage of the low strip ratio coal reserves adjacent to the outcrop. Contour ...

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 …

Coal: Stripping Ratio: Private Sector: Integrated Coal Mining Limited data is updated yearly, averaging 2.630 % from Mar 2005 (Median) to 2015, with 11 observations. The data reached an all-time high of 3.020 % in 2014 and a record low of 2.310 % in 2009.

The mining and stripping line is arranged along the ore body trend and moves perpendicular to the ore body trend (Fig. 4).The pioneer cut of the longitudinal cut mining can be excavated along the final boundary of the hanging wall or footwall of the ore body to form a single side working slope, and then advance to the footwall or hanging wall.

The Chenbaerhuqi coal field in Hulunbuir City, Inner Mongolia Autonomous Region of China, is where the Baorixile open-pit coal mine is situated (as shown in Fig. 2) 7,28.The mine's external ...

The mining operation's cut-off grade is 0.20%, and the stripping ratio is 1.9. Fig. 11 shows the calculation for the optimal ultimate pit in the area called "Cerro Colorado", with an area of 2.5 × 1.1 km 2 and a maximum depth of 300 m.

Note: (1) Stripping ratio is defined as the ratio of OBR to Coal produced in Open Cast mining. (2) Meghalaya OBR figures are not known and not reported. (3 ) While calculating stripping ratio, …

The stripping ratio is a number that represents the amount of overburden that must be excavated to mine an amount of ore (or coal). The stripping ratio is very important when determining the economic feasibility of a particular orebody, or the most economic mining method for a …

From the operational stripping ratio curve model and the advancement model related to profit and coal quality established above, it is evident that using only the economically reasonable stripping ...

Standard stripping ratio - the ratio of "overbudern (OB) to be removed" to "the mineral to be produced" during the whole project life. Suppose in an opencast mine, 20 lakh CuM OB will be removed during the life time (suppose 15 years) against the production of 10 lakh Te of coal, the standard stripping ratio will be 2.1

In order to determine transition depth from open-pit to underground mining on the basis of the allowable and economically feasible overall stripping ratios, an economic-mathematical equation is first introduced.

According to [10,11,12] overburden removal typically makes up more than 60% of the total mining costs in surface coal mines. According to statistics, the average stripping ratio for all surface coal mines in India is above 2.0. As mines become deeper and geo-mining conditions get complex, stripping ratios are anticipated to rise even more .

Determining Stripping Ratio _ Basic Mining Techniques - Free download as PDF File (.pdf), Text File (.txt) or read online for free. Mining -open pit

We explore the challenges of determining costs in the coal mining industry, including the impact of fixed costs and variable costs. We examine the importance of financial management in the mining industry. ... Consumables and Spares costs used for common activities are allocated to Mining and OBR based on the stripping ratio. Utility cost.

Multivariate function fitting of coal seam. One of the keys to the analysis of the stripping ratio is the accuracy of the calculation of coal reserves.

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 ...

In order to specify the maximum allowable stripping ratio (SR max) of a surface mine, break even ratio can help to establishes the pit limits. SR max defined as the ratio of overburden to ore at the ultimate boundary of the pit, …

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.

ciple that the boundary stripping ratio is less than or equal to the economic stripping ratio to deter-mine the pit limit. Stripping Ratio in Open-Pit Mining, Types of, Fig. 1 Stripping ratio diagrams. (a) Average stripping ratio. (b) Production stripping ratio. (c) Bench stripping ratio. (d)Boundarystrippingratio

At the most basic level, the strip ratio formula involves dividing overburden thickness by ore thickness. For example, an overburden thickness of 100 meters and an ore thickness of 50 meters...

BEP's resources are shallow and amenable to surface mining at extremely low stripping ratios. In 2023, BEP continued the evaluation of its development options. Kestrel Mine (Kestrel) ... Kestrel is an underground metallurgical coal mine located in Queensland, Australia, and its acquisition marked our first mining venture outside of Indonesia. ...

The document discusses different types of stripping ratios and their significance in open pit mining. It defines stripping ratio as the ratio of the total volume of waste removed to reach the ore volume. There are three main types of stripping …

The amount of waste material removed per unit of coal extracted, known as a strip ratio, directly correlates with the energy consumption to mine coal. Companies with a high stripping ratio, such as Berau Coal and Kaltim Prima Coal, normally have higher energy intensities, and consequently generate higher emissions from fuel combustion.

8.6.2 Stripping Ratio. Overburden Ration = d/t. This is a depth ratio often used by geologists. Mining engineers use a volumetric ratio. Overburden (m 3)/mineral (m 3)—dimensionless. Or overburden (m 3)/mineral (tonnes) = m 3 /t. The mining engineer's Stripping Ratio includes slopes, access ramps, and "dead work".

In recent years, with the gradual increase of the economic and reasonable stripping ratio, the mining of coal seam covered by internal dumping site has become feasible. This paper puts forward the ...

The primary coal seams targeted for mining are coal B, coal 1 2, coal 2 1, and coal 3 1. The original design's annual production capacity was 1.80 million t. The original design's annual ...

Coal Production from opencast mines in India (FY 1998-99 to 2016-17) Source: Coal Directory of India, FY 1998-99 to 2016-17 …

Coal mining activities take place primarily within the Province of Mpumalanga, which ... favourable stripping ratios can be found over large areas, making the use of surface mining methods the ideal option for most of the available mineable reserves. For this reason a large . 12

Open cut mining in Australia is facing the greatest challenge in its hilstory in attempting to compete not only with other operations internationally, but also with underground operations domestically. ... As open cut coal mines move into deeper areas andl the stripping ratios increase, the relative cost of overburden removal also increases. ...

Note: The above section was automatically generated and is based on data from the Global Coal Mine Tracker April 2024 release and the September supplement. Background on Mine. The Durgapur II Taraimar coal mine project proposed a 3 million tonnes per annum opencast and 1 million tonnes per annum underground mine on a lease area of 1070 ha is …

The calculation of raw ore cost comparison method is based on the equal cost per unit of ore in open-pit mining and underground mining, i.e.: In the formula, c is the mining cost of underground mining; a is the pure mining cost of open-pit mining; b is the stripping cost of open pit mining; and ris the weight of the ore.

Figures shows: In order to keep the pit dry, There are 40 dewatering pumps around the Cortez pit pumping water out of the ground at a total rate of 30,000 gallons per minute.