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How to calculate stripping ratio? ResearchGate
The stripping ratio (SR) refers to the amount of waste that must be removed for a given quantity of ore in openpit mining. It is commonly expressed as: It is commonly expressed as: SR=Waste
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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.
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Overlying rock which remains following excavation of reef or waste during mining or development and forms the "roof" of the excavated area. Head grade Grade of ore as delivered to the metallurgical plant. In situ Within unbroken rock or still in the ground. Incline Similar to a decline except an incline is constructed excavated from the bottom up. Indicated mineral resource Part of a
learn moreHighlights (All figures expressed in Australian dollars
• Good progress of underground mine development at Rosemont decline with first ore from, development, expected in the FY20 September quarter. • Baneygo underground exploration drilling continued with results supporting the view of potential underground resources. Results include 3m g/t, 3m g/t and 2m 43 g/t. • Drilling at Garden Well underground
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The stripping ratio (the ratio of waste rock to ore) varies dramatically over the life of an open pit mine and depends on the geometry of the ore body, ore grades, slope stability, site geology, and variations in the price of the metal.
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04/05/2018· Strip ratio: The ratio of tonnes removed as waste relative to the number of tonnes of ore removed from an openpit mine. For example, a 3:1 stripping ratio means that mining one cubic metre of ore will require mining three cubic metres of waste rock. Sulphide ore: Sulphide ores are generally found hundreds of metres below surface, and generally require underground
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Mining Mining Underground mining: When any ore body lies a considerable distance below the surface, the amount of waste that has to be removed in order to uncover the ore through surface mining becomes prohibitive, and underground techniques must be considered. Counting against underground mining are the costs, which, for each ton of material mined, are much higher underground than on
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Island Gold''s underground operations are currently accessed via a ramp system. The primary mining method is longitudinal retreat longhole stoping. Ore is hauled by truck to the Kremzar mill located approximately kilometres from the portal of the ramp. The Phase III shaft expansion of the operation to 2,000 tpd is expected to be completed in 2025. Longhole open stoping will continue to
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Dilution is the waste material not separated from the ore in the stages of mining, and is sent to the processing plant. It is defined at the ratio of tonnage waste mined and sent for processing over the combined ore and waste tonnage milled. The following equation is the expression used for dilution: Planned and Unplanned Dilution
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Since coming into operation, Argyle produced more than 800 metric carats (Mct) of diamonds, with an average stripping ratio in the open pit of around 7t of waste being moved for each ton of ore mined. Peak production was in 1994, at The pit is now so deep that the lack of manoeuvrability in the bottom has come to hinder mining operations.
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six years followed by a further 14 years of underground mining. The graphs summarise various aspects of the operation. (i) Describe the relationship between waste rock to ore ratio and the cost of transport during both phases of the mining operation. (ii) Explain the variation in mine profitability over the years of mine operation. (e) Analyse the key geological and nongeological factors
learn moreMarks Question 29 — Mining and the Australian Environment
six years followed by a further 14 years of underground mining. The graphs summarise various aspects of the operation. (i) Describe the relationship between waste rock to ore ratio and the cost of transport during both phases of the mining operation. (ii) Explain the variation in mine profitability over the years of mine operation. (e) Analyse the key geological and non
learn moreMining Prospecting and exploration | Britannica
Mining Mining Prospecting and exploration: Various techniques are used in the search for a mineral deposit, an activity called prospecting. Once a discovery has been made, the property containing a deposit, called the prospect, is explored to determine some of the more important characteristics of the deposit. Among these are its size, shape, orientation in space, and location with respect
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The ratio of overburden excavated to the amount of mineral removed is called the overburden ratio or stripping ratio. For example a stripping ratio of 4:1 means that 4 tonnes of waste rock are removed to extract one tonne of ore. Lower the ratio, the more productive the mine. Stripping ratio varies with the area under mining.
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The ratio of the quantity of overburden to the quantity of mineral ore (called the ''strip ratio'') is usually greater than one, and can be much higher.
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Underground hard rock mining refers to various underground mining techniques used to excavate hard minerals, usually those containing metals such as ore containing gold, silver, iron, copper, zinc, nickel, tin and lead, but also involves using the same techniques for excavating ores of gems such as diamonds or rubies. Soft rock mining refers to excavation of softer minerals such as salt, coal
learn moreStripping Ratios: What are They and Why are They Important
Calculating stripping ratios At their most basic, strip ratios can be calculated by dividing overburden thickness by ore thickness. For example, an overburden thickness of 100 meters and an ore
learn moreHighlights (All figures expressed in Australian dollars
• Good progress of underground mine development at Rosemont decline with first ore from, development, expected in the FY20 September quarter. • Baneygo underground exploration drilling continued with results supporting the view of potential underground resources. Results include 3m g/t, 3m g/t and 2m 43 g/t. • Drilling at Garden Well underground target also continued
learn moreA Glossary of the most common mining terms
04/05/2018· Strip ratio: The ratio of tonnes removed as waste relative to the number of tonnes of ore removed from an openpit mine. For example, a 3:1 stripping ratio means that mining one cubic metre of ore will require mining three cubic metres of waste rock. Sulphide ore: Sulphide ores are generally found hundreds of metres below surface, and generally require underground mining infrastructure. The
learn moreMining Waste an overview | ScienceDirect Topics
Of that, hard coal mining waste comprised % and metal ore (copper) mining and processing, %. The area of each dump ranges from about 10 to >200 ha for large central dumping sites where waste from several mines has been disposed.
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Overlying rock which remains following excavation of reef or waste during mining or development and forms the "roof" of the excavated area. Head grade Grade of ore as delivered to the metallurgical plant. In situ Within unbroken rock or still in the ground. Incline Similar to a decline except an incline is constructed excavated from the bottom up. Indicated mineral
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Classification of Underground Mining Methods Mineral production in which all extracting operations are conducted beneath the ground surface is termed underground mining. Underground mining methods are usually employed when the depth of the deposit and/or the waste to ore ratio (stripping ratio) are too great to commence a surface operation.
learn moreHow to calculate stripping ratio? ResearchGate
The stripping ratio (SR) refers to the amount of waste that must be removed for a given quantity of ore in openpit mining. It is commonly expressed as: It is commonly expressed as: SR=Waste (tons
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