What is IFRIC 20?

IFRIC 20 deals with accounting for the costs of removing waste materials to gain access to mineral ore deposits. This waste removal activity is known as ‘stripping’. Some stripping activity produces saleable inventory while also improving access to further quantities of mineral ore.

What is stripping activity adjustment?

Stripping activity – It is the activity of overburden removal that benefits the identified component of an ore to be mined by the entity. Standard stripping ratio – the ratio of “overbudern (OB) to be removed” to “the mineral to be produced” during the whole project life.

What are stripping costs?

What are Stripping Costs? Stripping costs are those costs incurred when removing overburden or waste materials in order to obtain access to a commercially-producible ore body.

What is deferred stripping?

(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 to as stripping.

Which type of waste is produced by stripping the land to obtain ores?

Waste rock is one of the maximum solid wastes occurred in the mining industry. In order to extract ore, large amount of rock is stripped or excavated and transported to the waste-rock dump.

What does OC stand for in mining?

Open-pit mining, also known as open-cast or open-cut mining and in larger contexts mega-mining, is a surface mining technique of extracting rock or minerals from the earth from an open-air pit, sometimes known as a borrow.

What is overburden removal cost?

4.13 Overburden Removal cost: is the cost incurred to remove the overlying material from the mine site. 4.14 Ratio Variance: It is the variance between current ratio and standard /average stripping ratio in terms of quantity of mineral produced during the period.

What is strip mining used for?

Strip mining is the practice of mining a seam of mineral, by first removing a long strip of overlying soil and rock (the overburden); this activity is also referred to as overburden removal. It is most commonly used to mine coal and lignite (brown coal).

What are the 4 types of mining?

There are four main mining methods: underground, open surface (pit), placer, and in-situ mining. Underground mines are more expensive and are often used to reach deeper deposits.

What are the 5 types of 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.

How do you calculate OMS?

Output per Man Shift (OMS)

1. In mining, OMS is one of the measures of efficiency for the production.
2. Details of OMS Calculation.
3. (i) Calculation for UG OMS = Coal Production/ Manshift.
4. (ii) Calculation for Open Cast OMS = {Coal production+(1.4*OBR)} / {Manshift+(Manshift*Average Stripping Ratio*1.4)}

What are the 3 techniques used for surface mining?

surface mining, method of extracting minerals near the surface of the Earth. The three most common types of surface mining are open-pit mining, strip mining, and quarrying. See also mining and coal mining.

What is over burden soil?

Overburden is the rock or soil layer that needs to be removed in order to access the ore being mined. Overburden is also referred to as spoil or waste. Overburdens are removed from surface mining and do not contain toxic components, unlike tailings, which is another type of underground mining waste.

What are 4 types of mining?

Depending on the material extracted, there are different types of mining processes that can be used to retrieve desired materials.
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Surface Mining

• Strip mining.
• Mountaintop removal.
• Open-pit mining.

What are the 3 types of mining?

Open-pit, underwater, and underground mining. These are the three main methods of mining we use to extract our products from the ground.

What are the 5 methods of mining?

There are four main mining methods: underground, open surface (pit), placer, and in-situ mining. Underground mines are more expensive and are often used to reach deeper deposits. Surface mines are typically used for more shallow and less valuable deposits.

What are the 3 methods of mining?

Open-pit, underwater, and underground mining. These are the three main methods of mining we use to extract our products from the ground. In this Digging Deeper article, we take a look at these different methods and provide a glimpse into what each involves.

What are the 4 main methods of mining?

What are the 3 formulas in ohms law?

3-4: A circle diagram to help in memorizing the Ohm’s Law formulas V = IR, I = V/R, and R= V/I.

How do you calculate ohms law?

To students of electronics, Ohm’s Law (E = IR) is as fundamentally important as Einstein’s Relativity equation (E = mc²) is to physicists. When spelled out, it means voltage = current x resistance, or volts = amps x ohms, or V = A x Ω.

What are the 5 types of surface mining?

What are the 4 main types of mining?

What is another name for overburden?

To overload or overtax. To overwhelm with an excessive amount of something. (usually of an object) To physically strain, or to apply force as to cause strain. To treat someone badly, cruelly or unkindly. To cause to become tired, weary or fatigued.

How do you calculate overburden pressure in soil?

Multiply the density log reading value by the total depth (in meters) of the measured area. Multiply the sum of Step 1 by . 01 to obtain the overburden pressure.

What are the 4 steps of mining?

The mining industry operates through a sequence of stages: exploration, discovery, development, production and reclamation.