A low grade ore body cannot support a high stripping ratio. The cost is purely driven by the cost of the mining fleet (capital and operating costs) to move the waste ore.

coal mining stripping ratio Grinding Mill ... what is stripping ratio coal mining ppt - zenith Machinery is a specialist manufacturer of Coal beneficiation plant. Read More Rhineland Lignite Mining - Mining Technology- what is stripping ratio coal mining,The new Garzweiler II mine will replace capacity from Bergheim and Garzweiler ...

HCI KHUSELA - PALESA MINE Gauteng. The Palesa Coal Mine, located 37 km North of the town Bronkhorstspruit, is the largest of the two HCI Coal Mines. Operations will ultimately comprise of opencast mining of coal 380 000 T/MTH @ strip ratio of 2.3 M3/T. The opencast mining scope of work includes ongoing rehabilitation.

Although the United States has the vast coal resource described in the previous chapter, perhaps as much as 4 trillion tons, the key issue for policy makers is the amount of coal that is economically recoverable.This is not a fixed quantity, but depends on the geological resource, the market price, and the cost of mining. The particular characteristics of the coal mining industry create unique ...

Aug 31, 2012· Chapter 2: The Environmental Effects of Strip Mining – The Strip … EFFECTS OF. STRIP MINING A ll mining operations have a disruptive effect on the … so long as the ratio between the overburden and the coal seam, called the stripping ratio, … In coal mining what is a good strip ratio – The Q&A wiki. 1. Overburden O/B 2. Coal / ore 3.

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 ...

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 are typically reduced to show the volume of waste removal required to extract one unit ...

Strip mining is a type of surface mining which involves the removal of a thin layer of material known as an “overburden” to access buried deposits of useful minerals.This type of mining is only effective in areas where mineral deposits are very close to the surface, making it feasible to quickly and easily remove the overburden to get to them.

strip mining meaning: 1. a method of obtaining substances such as coal from the ground that involves removing the top…. Learn more.

Stripping Ratio Calculation In Mining. In coal mining what is a good strip ratio - answers. In coal mining what is a good strip ratio? . How do you calculate stripping ratio for Open Pit Mines? Overburden tons/ore tons Share to: Bmartin344233233. Get Price And Support Online; CHAPTER 11 Mining Technology - Princeton .

For instance: If the thickness waste rock (overburden) is 100m and the thickness of coal is 50m then stripping ratio would be 2:1. That means one m3 (cubic meter) of coal would need mining two m3 ...

Mining Waste. Mining wastes include hard rocks, gravels, clays, pebbles, sands, limestones, chalks, siftings of fine fractions, dump tailings of flotation concentration of ferrous and nonferrous metal ores, sulfur ores, apatite-nepheline concentrates, coal wastes, halite flotation wastes, screenings of phosphorite, phosphoric ore fines, etc.

This mine is an open pit mine producing 5,000 tonnes ore and 5,000 tonnes waste per day. Rock characteristics for both ore and waste are typical of those of granite or porphyritic material. Operating conditions, wage scales, and unit prices are typical for western U.S. mining operations. All costs listed are in 2012 US$.

Calculating Stripping Ratios for Area Strip Mines. Mnge 315 Dr. B. C. Paul spring 2003 revised 2010 Note These notes contain information considered common knowledge to those familiar with Strip Mining. Books such as Elements of Practical Coal Mining and SMEs Surface Mining …

Sep 24, 2015· It also helps the coal industry save more time; obviously, blasting away hundreds of feet of soil and digging up coal using powerful machines require less man-hours than drilling a tunnel through a mountain, lowering people from the surface down to the tunnel and bringing mined coal from the tunnel up to the surface.

A. Abutment - In coal mining, (1) the weight of the rocks above a narrow roadway is transferred to the solid coal along the sides, which act as abutments of the arch of strata spanning the roadway; and (2) the weight of the rocks over a longwall face is transferred to the front abutment, that is, the solid coal ahead of the face and the back abutment, that is, the settled packs behind the face.

Frequently Asked Questions - Semirara Mining Corporation. ROM or Run of Mine Coal is the raw coal that is mined out of the mine pit. ... cubic meters for every metric ton of coal produced, such that a 10:1 strip ratio means...

of overburden generated by mining is enormous. 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. For example, if a proposed mining project involves the extraction of 100 million metric tons of mineral ore, then the proposed mining project

Surface Coal Mining Methods in Australia 5 2. Open cut mining methods strip mining Large-scale open cut coal mining operations commenced in Australia in mid 1960s and since then there has been significan t developments in this method of mining. The mines are now operating at significantly higher annual tonnages, growing deeper, more complex and

Coal mining is good because it is used to get a very important natural resource, coal. Coal is used in many things and without coal mining we could not do those things.

Coal mining, extraction of coal deposits from the surface of Earth and from underground. Coal is the most abundant fossil fuel on Earth. Its predominant use has always been for producing heat energy. It was the basic energy source that fueled the Industrial Revolution of the 18th and 19th

in coal mining what is a good strip ratio; in coal mining what is a good strip ratio. ... In strip coal mining operations, the following are sometimes seen: SR .... $1 = $68 Whereas the net value is zero at the pit limit, it is positive for the overall section. Get Price.

We needed a combination of very good quality coal, very good infrastructure, low strip ratio... It sits in a historic mining region, mined for more than 100 years and currently ... Australian Mine Sites (A-Z) - Coal - Saraji Each strip is excavated perpendicular to the dip of the coal to maintain a consistent waste/ coal stripping ratio .

Strip-mining for coal is practised in the UK, where the ratio of overburden to coal (by volume) is 20:1 for bituminous coal and 30:1 for anthracite. The stripping operations in the UK are now planned not only to reclaim the areas currently being exploited, but also to incorporate spoil material from old deep mines.

Aug 16, 2019 · In coal mining what is a good strip ratio The Q&A wiki In the construction, mining and utility equipment business, sales decreased .. of coal and overburden increased as coal mines with a truck and excavator bulk mining method with an average strip ratio of 4 The quasi strip mining approach is similar to that used in coal .

In coal mining what is a good strip ratio - Wiki Answers What Is Stripping Ratio?a. Measures relative deposit depth. Q: How important is depth in surface mining?? * …

Surface Coal Mining. Surface mining is accomplished by removing overburden from the coal seam and then blasting and removing the coal. The ratio of overburden excavated to the amount of coal removed is called the overburden ratio. The lower the ratio, the more productive the mine. The lowest overburden ratios are found in western surface mines.

in ore mining what is a good strip ratio. in ore mining what is a good strip ratio. ... Iron Ore Current Primary and Scrap Metal Prices. NEWS 15 Feb 1958 US aluminum service center shipments rise Houston, ... Inquire Now; influence of striping ratio on open cast coal mining. influence of striping ratio on open cast coal mining. ...