GineersNow Engineering Magazine November 2016 Issue No 009

More documents

Recommendations

Info

CANADA’S URANIUM MINING CONSIDERED CLEANER THAN MOST Photo by Cameco Canada is one of the world’s largest producers of uranium with an estimated 582,500 tonnes of it found in the country. Most people would give mining a bad name. Mining uranium has always been looked down on by environmentalists due to the bad reputation of producing high amount of greenhouse gases. However, researchers from the University of Saskatchewan believe that the amount of greenhouse gases produced from uranium mining and milling is little compared to the total emissions produced by nuclear power generation. The study states that only a gram of greenhouse gases is produced from mining and milling uranium for every kilowatt-hour of power from the power generated by uranium. According to the author of the paper David Parker from the University of Saskatchewan, "This is the first rigorous look at greenhouse gas emissions from uranium mining and milling in Saskatchewan. And it’s more detailed than the few studies that have been done before.” If compared to the production of power from coal and natural gas, uranium produces 12 grams of CO2 emissions per kilowatt hour from nuclear power, while coal produces 800 grams of CO2 per kilowatt hour and 500 grams from natural gas. This study was presented and published last July 29, 2016. It’s supported by the Sylvia Fedoruk Canadian Centre for Nuclear Innovation. Almost every material now is being utilized to be recycled. From paper, plastics, tin, and wood, these materials compose new products that are useful to mankind. But how about recycled aggregate for concrete? That we haven’t found yet. Well, until the research led by Yahya “Gino” Kurama, a professor of civil and environmental engineering and earth sciences from the University of Notre Dame will produce significant results in finding alternatives for recycled aggregate, civil engineers will have to deal with the conventional structural concrete with natural aggregates. Much has been developed about partial replacement of the binding element in structural concrete, which is cement, with industrial by-products such as fly ash, slag, and silica fume. But no research has been forwarded towards the replacement of coarse aggregates, which Kurama and his team have found ground on. Their concern lies on the conservation of coarse aggregates such as crushed rock and gravel, which composes a large part of a given concrete volume. The mining, processing, and THE SEARCH IS ON FOR CONCRETE WITH RECYCLED AGGREGATES transportation operations for these aggregates consume large amounts of energy and adversely affect the ecology of forested areas and riverbeds. They are devising ways to find a substitute for natural aggregates. Of course this won’t be as easy as it looks. Initial research of the team had studied 16 recycled aggregate sources in the Midwest of the United States to evaluate their capacity as a structural material, but to no avail. The study has to be expanded to many more sources from the eastern, southern and southwestern U.S. with the help of the University of Texas at Tyler and New Mexica State University. Factors like durability and lifecycle costs are being looked at to ensure this upcoming new aggregate as a viable alternative. More importantly, it will be tested to its effects in pre-stressed concrete and also in pre-cast. There are already existing applications of recycled aggregate in concrete but they are merely used in non-structural construction like sidewalks and roadways. That’s an old age development. What we’re looking for now is a new material to be used as an alternative aggregate for structural concrete, to be used in buildings and bridges. Photo by WikipediaCommons 22 NOVEMBER 2016 Mining Engineering and Its Importance
Photo by TwisterSifter WORLD’S LARGEST LAND VEHICLE If you think you’ve seen the world’s largest land vehicle and it’s not an excavator, think again. Currently holding the world’s biggest land vehicle is the Bagger 288 excavator which is built by Krupp (now ThyssenKrupp) of Germany and now owned and operated by RWE AG, a large utility company. The bucket wheel excavator is intimidatingly humongous at 311 feet in height, 705 feet in length and 46,600 tons – in contrast, Titanic was 46,328 tons. It takes five people to operate it having a 70-foot diameter bucket wheel, with 20 buckets that can scoop earth material of over 530 cubic feet. In a day, the Bagger 288 can process 100,000 cubic yards of material equivalent to 2,500 truckloads. The original function of this earth digger is to work in open-pit coal mines in Germany, which might be in halt with country mandating a shutdown of all German coal mining by 2018. Its design and manufacture took five years, not including the assembly which is another five years, totalling to a cost of $100 for its production. Being a huge vehicle has its downsides – it can only go onethird of a mile per hour on 3 rows of caterpillar track assembles. Moreover, every highway it crosses needs to be fully rebuilt because of its weight, basically destroying everything that is in its path. It needs tons of people for its mobility too, a good 70 men to prepare the way. Its preferred transferring was through caterpillar treads rather than disassemble-and-reassemble because it is less expensive. The Bagger 288 replaced NASA’s Crawler-Transporter in the throne of the world’s largest land vehicle. NOVEMBER 2016 Mining Engineering and Its Importance 23
Page 1: WORLD’S FIRST ENGINEERING NEWS FO
Page 4 and 5: Editor's Note Mining is not exactly
Page 6 and 7: COVER STORY CATERPILLAR INC.: MORE
Page 8 and 9: 8 NOVEMBER 2016 Mining Engineering
Page 10 and 11: Sustainability is part of who we ar
Page 12 and 13: COVER STORY Agile is the methodolog
Page 14 and 15: THE ROLE OF MINING IN SOCIETY By En
Page 16 and 17: Photo by InfoMine project is to con
Page 18 and 19: Photo by Phys.org 18 NOVEMBER 2016
Page 20 and 21: economic diversification and empowe
Page 24 and 25: 10 BEST YOUTUBE CHANNELS THAT FEATU
Page 26 and 27: Photo by youtube FILIPINO ELECTRONI
Page 28 and 29: Photo by komatsu $30 BILLION MARKET
Page 30 and 31: FIND OUT WHAT DRONES SEE WHEN FLYIN
Page 32 and 33: WHICH COUNTRIES HAVE T LARGEST GOLD
Page 36 and 37: conventional bonnet design, they of
Page 38 and 39: WHAT ARE THE MOST MINERALS AND META
Page 40 and 41: AUSTRALIAN MINING ACTIVITY INCREASE
Page 42 and 43: 10 ISSUES AND TRENDS THAT AFFECT TH
Page 44 and 45: FOUR INCREDIBLE OPEN PIT MINES Mini
Page 46 and 47: Why Engineering Students Hate Losin
Page 48 and 49: Photo by Wikipedia THIS IS MINING I
Page 50 and 51: AUSTRALIA ADVANCES CHANGE: FROM MIN
Page 52 and 53: NICKEL VALUE TO LESSEN IN 2017, BMI
Page 54 and 55: Will Hodgman Photo by TheAdvocate T
Page 56 and 57: MECHANICAL ENGINEERS WHO SHAPED THE
Page 58 and 59: JHARIA, THE HOME OF INDIA’S BLACK
Page 60 and 61: WHAT LIES AHEAD FOR CONSTRUCTION EQ
Page 62 and 63: Photo by SaskatchewanPolytechnic GE
Page 64 and 65: Photo by ETHZürich THIS IS HOW MUC
Page 66 and 67: CIVIL ENGINEERS WHO SHAPED THE CONS
Page 70 and 71: THIS COMPANY WANTS TO MINE GOLD AND
Page 72 and 73:
Photo by ProjectsIQ WORLD’S 40 BI
Page 74 and 75:
INSIDE THE WORLD’S LARGEST UNDERG
Page 76 and 77:
OLD COUPLE WOKE UP TO SINKHOLE CAUS
Page 78 and 79:
Photo by ResolutionPossible Photo b
Page 80 and 81:
BEAUTIFUL MINERALS AND STONES YOU W
show all

GineersNow Engineering Magazine November 2016 Issue No 009

Create successful ePaper yourself

Delete template?

Save as template?