sulphides in contact with air and water produces sulphuric acid which reduces the pH of water. The result of these reactions is increase in the solubility of heavy metals and consequently pollution of water resources. The Sarcheshmeh copper mine is one of the largest porphyry copper mines in the world which is located in south-eastern Iran. Chemical analysis of over than 600 water samples taken from streams and springs in the mining region and surrounding area of pit showed extensive changes in water quality
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Coursework 4 Copper Name of student: Alfiya Ospanova Tutorial group: G Copper is one of the earliest elements explored by humanity. Due to the special red shade it was easy to find in ancient times. The metal was named according to place where it was found‚ the Cyprus islands. Copper produced in massive stars and spread in the world as minerals like chalcocite and chalcopyrite (sulfide of copper)‚ azurite and malachite (carbonate of copper)‚ cuprite (oxide of copper). The atomic
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Penny in the Dust In the short story “Penny in the Dust” by Ernest Bucker‚ we see a father-son relationship. Three points that I will be discussing are: Pete and his qualities‚ the conflict‚ and the relationship Pete and his father have. In this story we see a weak father and son relationship in the starting‚ which becomes better and stronger. First of all‚ Pete is a 7-year old boy who learns how much his father loves him. Pete is softhearted boy who loves his father more than a 7-year old
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J.C. Penny Company Strengths Market penetration J.C. Penny is currently operating in all 50 US States. This is the first step to capitalizing off of share in the retail market. (JCP Online‚ 2013) Essentially no matter where you are in the U.S. you can shop at a J.C. Penny’s. The sales impact of offering a great product mix will be enhanced by this kind of market penetration. Publicly traded The benefit of being a publicly traded company is that it can give investors more confidence when looking
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Mining Assignment #4 By Siyuan Wei‚ Yifei Pei‚ Amrita Sur and Clinton Huynh Mineral: Copper Dip: 60 Depth: 650m Location/Terrain: Under River Chosen Mining Method: Sublevel Stoping - Sublevel Stoping is designed for mineral deposits which consists of fairly stable rocks and have a steep dip. - This method is quite commonly used to mine copper at varies sites around Australia. For example‚ Mount Isa‚ Olympic Dam etc… Mining Process - Sublevels are created within the solid
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Abolishing the Penny: The biggest questions now days are‚” Should the penny really be abolished and why is the penny still in route like its ten or five cents?” It’s been our smallest-denomination coin for 150 years. But if people are leaving pennies at the cash register‚ is it time to get rid of them? In this essay I am going to argue why we should keep the penny and why people think the penny should stay in route with the rest of the coins. Also why or why not we should keep the penny and if we
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Title: What is the effect of different fat percentages in milk on the mass of curds produced? Purpose: The purpose of the experiment was to determine if the percentage of fats and proteins in different types of milk would affect the mass of curds produced. Background Information: In different types of milk there is a variety in percentages of fat and slightly different percentages of protein. For example‚ in one cup of skim milk there is approximately 8.3 grams of protein‚ while in one cup of whole
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Penny stocks are inexpensive and risky stocks that can sometimes value a penny or a few dollars. Generally these stocks are often found under $1.00 but most identify them as stocks that trade under $5.00. Penny stocks cannot trade on the Dow Jones or Nasdaq but over the counter. There are several reasons why such types of stocks are so economical‚ but they can potentially be very good investments. First reason why penny stocks are so cheaper is because they signify a financially troubled firm. You
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1.PERCENT ● DEFINITION OF PERCENT - Percent means parts per 100 The symbol is % Example: 25% means 25 per 100 ● CONVERSION TECHNIQUES - ✔Changing percent to decimal Change a percent to a decimal. Move the decimal point two places to the left. In a percent‚ the decimal point would come at the end of the last number (for 75%‚ envision that it looks like 75.) Examples: 75% converts to .75 40% converts to .40 3.1% converts to .031 ✔Changing decimal or whole number to percent Change a decimal
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Percentages in real world Keywords: math‚ divide‚ percentage‚ interest‚ persent change Around the year 1260‚ the philosopher Roger Bacon wrote: “Mathematics is the door and the key to the sciences... for the things of this world cannot be made known without a knowledge of mathematics”. Centuries later this is as true as ever. Mathematics is unique. It is both a beautiful and fascinating world of abstract structures and ideas and a down-to-earth‚ practical subject at the heart of modern science
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