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Mining
Mining for coal is something that is widely known, but did you know that diamonds, uranium, copper, and other non-renewable natural resources are also mined? There are two types of mining; surface and subsurface. Questions about the methods and types of mining, what ores are mined, and related questions should be asked in this category.
4,677 Questions
What mining material harms the environment the most?
The mining and burning of coal is the most damaging to the environment.
david barksdale known as king david was the original leader of the chicago street gangs the gangster diciples, black diciples, maniac latin diciples, devil deciples,satan diciples, and the black gangster diciples
What sorts of changes can transform a deposit that is an ore into a deposit that is not an ore?
williams berg acadamy
What is the importance of copper mines in Mexico?
Copper mines in Mexico are not as paramount as mines of other minerals like silver or gold. Nonetheless, Mexico is the 18th largest producer of copper in the world, with several mines throughout its territory.
What is room and pillar mining?
coal is mined in a series of rooms cut into the coalbed. Pillars of unmined coal are left intact, and serve to support the mine roof, as miners advance through the coal seam.
What are wirebound boxes used for?
About 60 percent of wirebound boxes are used for agricultural clients, such as fruit and vegetable growers. The military and private industries also use wirebound boxes.
Is strip mining have positive or negative effects?
Most of the times, strip mining has positive and negative consequences. Usually, the viewers get the positive aspect of strip mining, and the performers are affected by the loneliness and long nights of working 12 hour shifts. Err, my sources say that it's actually not that lonely, and the pay is good....
So, I guess strip mining is only positive.
What are two negative impacts of mining?
Mining usually tears up large areas of the countryside. A lot of effort goes into recovery of sites, and this costs in terms of dollars, energy and time. Mining, particularly underground mining, is a dangerous business. Many miners are killed or injured every year in accidents (particularly in China). Additionally, mining is conducted to recover ore or aggregates. Processing ore to recover metal takes energy and creates lots of opportunities for pollution. Pollution from the recovery of metal from ore is a serious issue.
Iron ore is any rock that contains a usable quantity of iron. Common iron ore minerals include hematite, magnetite, limonite, and siderite. These are frequently found together with assorted silicates. Although iron does not occur in its pure form in nature, some kinds of iron ore contain up to 70% iron atoms. Iron ore consists of oxygen and iron atoms bonded together into molecules. To create pure iron, one must deoxygenate the ore, leaving only iron atoms behind. That is the essence of the refining process.
To coax the oxygen atoms away from the iron ore requires heat and an alternate atomic partner for the oxygen to bond to. Carbon fills this role nicely, and is readily available in the form of everyday charcoal, or coke, a form of carbon made from coal. The carbon atoms bond with the oxygen in the ore to create carbon dioxide and carbon monoxide, gases which escape out a chimney. Because iron ore typically contains silicates, which do not bond to the carbon, these remain in the iron after it is refined, creating wrought iron, a malleable and strong form of iron used by blacksmiths throughout history.
To create an even purer form of iron, known as pig iron, limestone must be added to the mix and the heat increased. This is done contemporarily in the silo-like structure known as a blast furnace. The calcium in limestone bonds with the silicates in the ore, creating a material called slag, which floats on top of the pure liquid iron. The iron is periodically drained into a mold from a port at the bottom of the blast furnace, where it cools. The pig iron can then be converted into wrought iron by mixing it with silicon, or processed further to create steel.
Steel is a form of iron mixed together with 0.5% - 1.5% carbon but no oxygen, silicates, or other impurities. Steel is much more difficult to work than wrought iron, but is greatly stronger. Iron can be mixed together with various other elements to create alloys with desired properties, such as lightness or resistance to rust (stainless steel).
Because iron is so common (composing 5% of the Earth's crust), strong, and relatively easy to process, it plays a very intimate role in human civilization. Roughly 98% of all ore shipped worldwide is used in the production of iron or steel. Surface deposits of iron ore are abundantly available in most geographic areas. Ancient civilizations which reached the threshold level of technology required to smelt iron ore enjoyed decisive advantages over their competitors, whose bronze and copper weapons were no match for ironworks.
Is there a cheat to get Pokemon from the mining museum on Pokemon pearl?
There is no cheat, just use the explore kit go undergound keep digging and you'll end up getting a fossil.go to bag where you have it put it into your normal bag, go up intothe mining museum. Talk to the man a the counter he'll say he'study fossils he'll take your fossil, go to the poke center take a Pokemon out your party to make room go back and talk to him again. he will give you the Pokemon that came from the fossil
X24
What are the 10 highest paying jobs in Ireland?
According to a survey conducted by an independent company, a CEO's are the highest paid jobs in Ireland, with salary's peaking around 150,000 euros a year. The second highest paying job in Ireland is film directors of either independent or big overseas companies with pay peaking at around 100,000 euros a year.
What are some industrial uses of amethyst?
One is it has been used in magic for many years such as physic healing
What is the main economic land usage in northern Canada and most of Alaska?
Hunting, Forestry, and Subsistence Farming are the main economic land usage in northern Canada and most of Alaska.
References: Wiggers, Cindy. Trail Guide to World Geography. Nancy, KY: Geography Matters, 2002. Print.
What are the factors that might cause magma to form a laccolith instead of a sill?
the chemical and physical particles
Where can you find kimberlite rock?
in kimberlite pipes. these happen in many parts of the world (including the U.S.) but they seem to be most concentrated in southern africa.
Is tanzanite semiprecious or precious?
Tanzanite is the rarest and semi-precious gemstone. Semi-precious stones are those that are mined from natural deposits and are less valuable than precious stones. Precious stones are mined from mines and are highly valued.
So if you are planning to buy natural & real tanzanite stone then you can select from GemsNY, where you can find handcrafted & certified tanzanite as per your requirement.
What are some unique properties that can be used to identify minerals?
1.Color
2.Streak
3.Luster
4.Fluorescence
5.Chemical
6.Composition
7.Hardness
8.density
9.fracture
10.cleavage
11.crystal form
ONE definition of stemming is inert material, such as fine gravel, that is placed on top of explosives in a hole drilled in the rock. When the explosives are fired, the stemming locks together from the expanding gasses, and keeps the force of the explosion in the borehole a few thousandth of a second, until rock begins to break.
What are tailing materials IN MINING?
Those materials left over after the economically extractable portion of the mineral being mined has been separated from the ore.
What resulted from the 1913 coal miners strike in Ludlow Colorado?
The Colorado National Guard opened fire on the miners' tent city.
What are the properties used to identify minerals?
luster
streak
shape
density
color (not always reliable tho mulltiple types of minerals can have the same color)
odor
tenacity
reaction to acid
cleavage
magnetism
electrical properties
Is gypsum a renewable resource?
No, gypsum is not a renewable resource. What is in the ground and what we've already mined is all there is.
How do you calculate the denstiy of pyrite?
Compare its weight to the weight of an equal volume of water. The weight of the specimen divided by the weight of the water equals the density of the specimen.
Returning the land to it's original state after mining?
First mine operators replace the soil they used during the mining Then they plant trees and grass. This is also known as Reclamation.
