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definition of iron mining

Iron mine definition of Iron mine by The Free Dictionary

Iron mine synonyms, Iron mine pronunciation, Iron mine translation, English dictionary definition of Iron mine. Noun 1. iron ore an ore from which iron can be extracted atomic number 26, Fe, iron a heavy ductile magnetic metallic element; is silver-white in pure...

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What is Iron? Ore & Explanation Video & Lesson

Feb 06, 2017· Open pit mining, which involves excavation from the surface, is the most common mining method, but underground mining is also used, particularly where the iron ore extends deep below the surface

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Glossary of Mining Terms SEC.gov

Banded iron formation A bedded deposit of iron minerals. Basalt An extrusive volcanic rock composed primarily of plagioclase, pyroxene and some olivine. Basal till Unsorted glacial debris at the base of the soil column where it comes into contact with the bedrock below. Basement rocks The underlying or older rock mass. Often refers to

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Mining Underground mining Britannica

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

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Iron mine definition of Iron mine by The Free Dictionary

Iron mine synonyms, Iron mine pronunciation, Iron mine translation, English dictionary definition of Iron mine. Noun 1. iron ore an ore from which iron can be extracted atomic number 26, Fe, iron a heavy ductile magnetic metallic element; is silver-white in pure...

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What is Iron? Ore & Explanation Video & Lesson

Open pit mining, which involves excavation from the surface, is the most common mining method, but underground mining is also used, particularly where the iron ore extends deep below the surface

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Iron ore definition of iron ore by The Free Dictionary

Define iron ore. iron ore synonyms, iron ore pronunciation, iron ore translation, English dictionary definition of iron ore. Noun 1. iron ore an ore from which iron can be extracted atomic number 26, Fe, iron a heavy ductile magnetic metallic element; is silver-white in pure...

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Iron Mine Definition of Iron Mine by Oxford Dictionary

Mid 16th century; earliest use found in Thomas Elyot (c1490–1546), humanist and diplomat. From iron + mine.

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Mining Britannica

According to historians, the Egyptians were mining copper on the Sinai Peninsula as long ago as 3000 bce, although some bronze (copper alloyed with tin) is dated as early as 3700 bce. Iron is dated as early as 2800 bce; Egyptian records of iron ore smelting date from 1300 bce.Found in the ancient ruins of Troy, lead was produced as early as 2500 bce.. One of the earliest evidences of building

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definition of lump and fine iron ore

definition of lump and fine iron ore. Lump ore mining Britannica,In iron processing Lumps and fines Asmined iron ore contains lumps of varying size the biggest being more than 1 metre 40 inches across and the smallest about 1 millimetre 004 inch The blast furnace however requires lumps between 7 and 25 millimetres so the ore must...

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Iron Range Wikipedia

The term Iron Range refers collectively or individually to a number of elongated iron-ore mining districts around Lake Superior in the United States and Canada. Despite the word "range", the iron ranges are not mountain chains, but outcrops of Precambrian sedimentary formations containing high percentages of iron. These cherty iron ore deposits are Precambrian in age for the Vermilion Range

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Mesabi Range Wikipedia

The Mesabi Iron Range is a mining district in northeastern Minnesota following an elongate trend containing large deposits of iron ore.It is the largest of four major iron ranges in the region collectively known as the Iron Range of Minnesota. First described in 1866, it is the chief iron ore mining district in the United States.

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Tailings Wikipedia

Terminology. Tailings are also called mine dumps, culm dumps, slimes, tails, refuse, leach residue, slickens, or terra-cone (terrikon).. Examples Sulfide minerals. The effluent from the tailings from the mining of sulfidic minerals has been described as "the largest environmental liability of the mining industry". These tailings contain large amounts of pyrite (FeS 2) and Iron(II) sulfide (FeS

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three type of ore mining and definition

Mining Wikipedia. Mining is the extraction of valuable minerals or other geological materials from the Earth, usually from an ore body, lode, vein, seam, reef or placer deposit.These deposits form a mineralized package that is of economic interest to the miner.

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Iron Mining Process Minnesota Iron

Iron Mining Process. From blasting to crushing to separation more than 85% of the iron mined in the United States is mined in northeastern Minnesota to make our nation’s steel. Blasting Taconite is a very hard rock. Using explosives, the taconite is blasted into small pieces.

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A Glossary of the most common mining terms

May 04, 2018· 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 main benefit to sulphide ores is that they can be concentrated using a

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smelting Definition & Facts Britannica

Concentrated ore and a flux, commonly limestone, are charged into the top, and molten matte—a compound of copper, iron, and sulfur—and slag are drawn out at the bottom. A second heat treatment, in another (converter) furnace, is necessary to remove the iron from the matte.

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What Is The Environmental Impact Of The Mining Industry

Apr 25, 2017· Mining is the extraction of minerals and other geological materials of economic value from deposits on the Earth. Mining adversely affects the environment by inducing loss of biodiversity, soil erosion, and contamination of surface water, groundwater, and soil.

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