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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
Advantages and disadvantages of data mining?
Data mining brings a lot of benefit s to retail company in the same way as marketing. Through market basket analysis, the store can have an appropriate production arrangement in the way that customers can buy frequent buying products together with pleasant. In addition, it also help the retail company offers a certain discount for particular products what will attract customers.
Finance / BankingData mining gives financial institutions information about loan information and credit reporting. By building a model from previous customer's data with common characteristics, the bank and financial can estimate what are the god and/or bad loans and its risk level. In addition, data mining can help banks to detect fraudulent credit card transaction to help credit card's owner prevent their losses. ManufacturingBy applying data mining in operational engineering data, manufacturers can detect faulty equipments and determine optimal control parameters. For example semi-conductor manufacturers had a challenge that even the conditions of manufacturing environments at different wafer production plants are similar, the quality of wafer are lot the same and some for unknown reasons even contain defects. Data mining has been applied to determine the ranges of control parameters that lead to the production of golden wafer. Then those optimal control parameters are used to manufacture wafers with desired quality. GovernmentsData mining helps government agency by digging and analyzing records of financial transaction to build patterns that can detect money laundering or criminal activity. Disadvantages of data miningPrivacy IssuesThe concerns about the personal privacy have been increasing enormously recently especially when internet is booming with social networks, e-commerce, forums, blogs…. Because of privacy issues, people are afraid of their personal information is collected and used in unethical way that potentially causing them a lot of trouble. Businesses collect information about their customers in many ways for understanding their purchasing behaviors trends. However businesses don't last forever, some days they may be acquired by other or gone. At this time the personal information they own probably is sold to other or leak. Security issuesSecurity is a big issue. Businesses owns information about their employee and customers including social security number, birthday, payroll and etc. However how properly this information is taken is still in questions. There have been a lot of cases that hackers were accesses and stole big data of customers from big corporation such as Ford Motor Credit Company, Sony… with so much personal and financial information available, the credit card stolen and identity theft become a big problem. Misuse of information/inaccurate informationInformation collected through data mining intended for marketing or ethical purposes can be misused. This information is exploited by unethical people or business to take benefit of vulnerable people or discriminate against a group of people.In addition, data mining technique is not perfectly accurate therefore if inaccurate information is used for decision-making will cause serious consequence.
How do you avoid buying conflict diamonds?
If you are talking about blood diamonds, the only way is to buy only diamonds that come with a certificate.Some diamonds from Africa are called Blood diamonds or conflict diamonds.Blood Diamonds, also known as "Conflict Diamonds" are stones that are produced in areas controlled by rebel forces that are opposed to internationally recognized governments. The rebels sell these diamonds, and the money is used to purchase arms or to fund their military actions. Blood Diamonds are often produced through the forced labor of men, women and children. They are also stolen during shipment or seized by attacking the mining operations of legitimate producers. These attacks can be on the scale of a large military operation. The stones are then smuggled into the international diamond trade and sold as legitimate gems. These diamonds are often the main source of funding for the rebels, and arms merchants, smugglers and dishonest diamond traders enable their actions. Enormous amounts of money are at stake. so bribes, threats, torture, and murder are part of their operations. This is why the term "blood diamonds" is used.
What was life like for miners in 1859?
very tough and restless it made lots of children work hard lots of kids died because of this..............
You have other papaers from the silver mining company of New York March 1 1877?
i hav eseveral pieces of paper including the map of the silver mining company
How is plutonium used in gold mining?
Plutonium is not commonly used in gold mining. Plutonium is a highly radioactive element that is used in nuclear reactors and nuclear weapons, but it is not typically associated with gold mining processes.
Generally a pickaxe, but other tools will be used as well.
they also use a map and drills
What is overhand and underhand mining?
Overhand cut and fill mining involves excavating a horizontal slice of an orebody, then filling the void with a backfill material - typically mine waste or rejects from the processing plant . After backfilling, another slide is taken on top of the previous one, with the process proceeding until the orebody extraction is complete.
Underhand cut and fill mining also starts with a single horizontal slice, but subsequent slices are removed from below the initial one. In underhand mining, the backfill material usually has cement added to make a low grade concrete roof that is sufficiently strong to safely work under.
Advantages of double-roll crusher?
Roll crusher used for metallurgy is used for both, primary and secondary crushing. They guarantee a strictly defined final grain size with a minimum of fine grains. The roll crusher is applied in the industry of cement, chemical, electric power, metallurgy, building materials, refractories and other sectors for crushing medium hard materials such as medium and fine crushing of limestone, slag, coke, coal and other materials.It is more superior than ordinary crushers especially in the construction Materials Industry like pisolite and green bean shake production.
The Advantages of Double-roll Crusher as follows:
1. the main structure of the gear transmission device: fixed roll, active roll, drive shaft, the body, chassis, shell, long gear cover parts.
2. machine power is spread by a triangle belt motor wheel, and then through a pair of intermediate decrease gear, make the fixed roller rotation, then drive the movable roller by the other fixed on the end of a long gear, the two roller relative movement to crush the materials.
3. With the shaping functions, a cubic-shaped product, large packing density.
Principle of Good Quality Roll Crusher Used for Metallurgy
The two rollers have wedge or gasket adjusting device, wedge devise with the top adjustment bolt, when the adjustment bolt wedge block upward pull up, wedge will activities roller top from fixed wheel, two roller gap becomes larger, the discharge size becomes larger, when the wedge block down, activity roller compression spring (or pressing oil cylinder) under the action of two gap becomes smaller, the discharge size becomes smaller. Gasket device is through the increase or decreases the number of gasket thickness to adjust the size of the discharge size when adding gasket will make two roller wheel gap bigger, when reduce gasket will make two roller wheel clearance decrescent, the discharge size becomes smaller.
Except for the advantages above all, if you want to learn more about the structure of double-roll crusher, can visit page: miningftm.com, what's more, it also shows the difference between Double roll crusher VS Toothed roll crusher.
Was there a marble mine on the isle of Patmos?
Considerable research reveals no difinitive answer but a prison island with no trees and nothing of value to mention leaves little to presume. St. John was sentenced at perhaps 90 yrs of age and obtained visions enough to perplex interpretation for millennia. A marble quarry is a safe bet.
Advantages of mining metals to the economy?
One of the main advantages to the economy is that because certain metals are running out they can be sold across countries at a high price
hope this helps =)
Kansas does not have a state gem. Several other states do not either
What is the type of mineral mined at Johannesburg in South Africa?
I know South Africa is a rich source if diamonds
Is there a AR code to get mew from the mining museum?
WOOWEE your lucky! 94000130 FCFF0000 B21C4D28 00000000 10001170 00000096 D2000000 00000000 Now go to the mining museum while holding L+R. Keep holding L+R while talking to the man and he will give you mew!
Bat guano is mined in Arizona?
yes it used to be at least not sure about now though there is an old guano mine in the grand canyon west near the sky walk
What European country is the leading producer of coal?
Russia is the leading producer of coal in Europe. However, the country wholly in Europe that is the leading producer of coal is Germany.
What type of mining is done in North Carolina?
People in North Carolina mine diamonds and rubies and everything. Truth
Mining done by family members or community which is not under government is called rat hole mining in India. This is mainly done by tribals of north-east India. This is named so because they dig holes similar to that of rat holes to mine.
What is the waste rock that must be removed before a mineral can be used?
In mining this is known as "gangue".
What is the swell factor for mining sand and gravel?
The swell factor of materials such as sand and gravel is a variable which is dependent upon the type and compaction of the undisturbed (bank run) material. Generally speaking swell for sand and gravel can range from 12% to 40%. The variability in swell is affected by moisture, clay and other mineral content. Clean, dry sand and gravel tends towards the 12% end with an average of around 17%. Swell increases to the right as the material tested becomes "dirtier".
Bank cubic yard (BCY) is converted to loose cubic yard (LCY) by multiplying the BCY x swell factor + BCY.
Swell of a given deposit can be approximated by the use of several calibrated buckets. Carefully excavate a volume of bank run material and place it directly into calibrated buckets of a known volume. (Note: a five gallon bucket in not a five gallon bucket, you need to actually calculate the volume.) Before moving the filled or partially filled buckets, measure the depth from the rim top to the average top of material and also weigh each bucket. Carefully record the numbers for each bucket. Next, carefully measure and calculate the volume of the hole from which the material was removed.
The volume of material in the buckets (loose) will be larger than the volume removed from the hole (bank). The difference reflects the amount of swell for that particular deposit.
Where was gold first found in US?
Gold was first found in North Carolina in 1799 but no one knows who or were in North Carolina thanx for reading
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