What Is Stripping Ratio For Mine
What Is a Stripping Ratio? (with picture) - wisegeek
May 31, 2018· Stripping ratio is a term that is derived from the mining industry and is used in reference to the open-pit mining process. The stripping ratio method of calculating the profitability of the mining procedure is commonly …
Surface mining planning and design of open pit mining
vii) Stripping Ratio The ratio is most commonly expressed as: Strip Ratio (SR) is the mass of waste to be mined to obtain one unit mass of ore. Waste (tons) SR = ----- Ore (tons) For example, a 3:1 stripping ratio means that mining one cubic meter of ore will require mining three cubic meters of waste rock.
What is STRIPPING RATIO? What does STRIPPING RATIO …
Aug 24, 2017· 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.
Glossary of Mining Terms - Kentucky Coal Education
Stripping ratio – The unit amount of overburden that must be removed to gain access to a similar unit amount of coal or mineral material. Stump - Any small pillar. Subbituminous – Coal of a rank intermediate between lignite and bituminous.
The worlds deepest, biggest and deadliest open pit …
Bingham Canyon Mine, located near Salt Lake City, is the world's deepest man-made open pit excavation. The mine is 2.75 miles (4,5km) across and 0.75 mile (1,2km) deep. Since mining operations started in 1906, Bingham Canyon Mine has been the granddaddy of all copper mines.
What is Strip Mining? (with pictures) - wisegeek
Jun 12, 2018· Classically, strip mining is used to mine tar sand and coal. This technique is also referred to as open cast, open cut, or stripping. In this technique, the first step is the removal of trees, shrubs, and structures on the area to be mined, a process which is usually accomplished with heavy duty bulldozers.
Mowana copper mine | Wood Mackenzie
Mowana is an open pit mine. From 2009 to 2014 the mine had a very high stripping ratio averaging 20:1. From 2015 up to the end of the budgeted mine life in 2020 the strip ratio is expected to average 5:1. Plant capacity has steadily increased and …
strip ratio in coal mining - thinkgloballysouthjersey
Mine Plan Justification - Whitehaven Coal- strip ratio in coal mining ,upon stripping ratio, depth of coal, coal quality, proximity to infrastructure, environmental concerns, location of OEA's and water management Once the pit shapePower River Basin producers finding it more costly to get to coal 9 Aug 2013 A strip ratio of 1 to 1 means …
Stripping Ratio | Truck | Mining - Scribd
Fig. 9.1: Palabora open pit copper mine, South Africa 59530725.doc 8 8/3/2011 SR econ (Bm 3 /t) = 9. The Pit Limit is defined by the economic stripping ratio SRecon.2 revenue from ore ($/t) . access roads and all other surface facilities. g/t or kg/t) in a mineral.
Chapter 2: The Environmental Effects of Strip Mining - …
The backfilled pit is then covered with topsoil and seeded. This process continues along parallel strips of land so long as the ratio between the overburden and the coal seam, called the stripping ratio, makes it economically feasible to recover coal.
Mine wastes management - Mining and Blasting
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.
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: 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 order to extract a given amount of ore.
Stripping Ratios, Pit Limits & Cutoff Grade Optimization ...
In strip coal mining operations, the following are sometimes seen: Overbuden Thickness (ft) Overburden (yd 3 ) SR = SR = Coal Thickness (ft) Coal (tons) Stripping Ratios Instantaneous stripping ratio: The stripping ratio for a given push back Overall stripping ratio: The stripping ratio for the total amount of material removed.
1 4 Stripping Ratio | Ratio | Surface Mining - Scribd
Incremental stripping ratio (InSR) InSR is the change in the stripping ratio from year to year. This also helps in waste dump planning. yearly change in the ISR. OSR will provide information regarding overall economic viability of the mine.Average stripping ratio will indicate the economic viability up to the given instant.
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.