A bare copper equipment grounding conductor should not be placed in an aluminum cable tray due to the potential for electrolytic corrosion of the aluminum cable tray in a moist environment. For such installations, it is best to use an insulated conductor and to remove the insulation where bonding connections are made to the cable tray, raceways, equipment enclosures, etc. with tin or zinc plated connectors.
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NEWSBREAK: China to sell reserves of copper, aluminium, zinc to fabricators - 4 views
Practices for grounding and bonding of cable trays - 0 views
Nanotechnology: The coolness of tiny things | The Economist - 0 views
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The second problem is which particles to use. At the moment oxides of metals such as zinc and copper seem to be the favourites, but tiny tubes made of carbon are also being explored.
MCC, Jiangxi Afghan copper JV to start copper concentrate production in 2013 - 0 views
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A copper mine joint venture between Metallurgical Corp of China (MCC) (1618.HK: Quote) and Jiangxi Copper (0358.HK: Quote) in Afghanistan is expected to start production of copper concentrates in 2013, an executive at MCC Tongsin Resources Ltd said on Wednesday. The first phase of the Aynak copper mining project would have a designed capacity of 200,000 tonnes of copper in concentrate, said Zeng Tao, sales manager of the copper and zinc unit of Hong Kong-listed MCC. He said capacity would be expanded to 500,000 tonnes in the second phase but did not provide a timeframe for completion. MCC was also considering building a smelter at the site, he added.
Recently Discovered Nanocoating Makes Heat Transfer Happen Much Easier - 0 views
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The action of cooling things down plays a critical part of any mechanical or electric system, because the inevitable heat, produced by friction, is the number one cause of almost instant failure. So far, different methods that cool systems have been discovered, but not to the extent of performance that engineers dream of building their computers or mechanical devices (cars, for example). Oregon State University researchers, led by Terry Hendricks, have discovered a method of applying a nanostructured coating that could make the heat transfer more easily. Their findings have been published in the International Journel of Heat and Mass Transfer, and they also filed a patent for them.
Copper output to rise as much as 40% - Antamina - 0 views
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Antamina, a leading copper-zinc mine in Peru, said on Wednesday its copper output would rise by up to 40 percent after a $1.2 billion expansion is concluded.
BHP Profit up 15% to US$15.4bn - 0 views
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BHP Billiton Limited, Australia's mining giant, recorded a 14.7% increase in profit for the 2008 fiscal year. The company's record US$15.39bn profit was slightly higher than expected, with most analysts predicting US$15.372bn. BHP said, "emerging economies continue to drive demand for commodities, [and] a slowdown in developed countries will have minimal impact." BHP achieved record annual production across seven commodities including copper. Underlying EBIT for the company's base metals unit increased by 16.2% y-o-y to US$7,989m. "Higher average prices for copper, lead, silver, molybdenum and gold increased underlying EBIT, partially offset by lower average zinc prices," said the company, adding that, "in the short term, we expect prices to remain high relative to historic levels, albeit with higher volatility." The final dividend for the year ended 30 June 2008 was US41c per share, bringing total dividend for the year, together with the US29c per share interim dividend in March, up to US70c per share, a 49% increase on FY2007.
Xstrata H1 revenue up 13%; profit down 6.7% - 0 views
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On 6th August, Xstrata reported H1 profits were down 6.7% versus the same period in 2007. Revenues were 13% higher at $16.092 billion, after record first-half production in coking and semi-soft coal, ferrochrome, refined nickel, platinum, zinc concentrate and lead concentrate. The company expects second-half production to be even stronger, reflected in their decision to raise the interim dividend by 13% to 18c. per share. Xstrata remains bullish over demand prospects in China, with ongoing infrastructure development and urbanisation underpinning growth, adding "the Group is well positioned to enjoy margin expansion and improved profitability from the second half of 2008 and into 2009".
Anglo deepens undersea quest - 0 views
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Aim-listed Nautilus is part of a tier of exotic exploration companies that has been badly affected by falling metals prices and an increasing aversion to risk. The company is adapting deep-sea drilling equipment used by the oil and gas industry to prospect for gold, copper and zinc deposits more than a kilometre below the surface of South Pacific seas.
China wants to close outmoded small copper, lead, zinc, aluminium, steel and oil plants - 0 views
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China vowed on Monday to downsize some of its outmoded oil refining, steel and metal production plants, as oversupply raised challenges while demand for fuel and industrial products weakened due to its slowing economy.
LME cancelled warrants are rising fast - 0 views
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And so apparently are nickel, zinc and aluminium prices, according to notes from Barclays Capital, JP Morgan and Standard Chartered. More intriguingly there has been a sudden surge in cancelled warrants at the London Metals Exchange (LME). Metal on warrant represents inventories in store at the LME’s warehouse. But cancelled warrants represent metal earmarked for delivery — investors cancel their warrants because they want to take it out of the LME warehouse, as Chris Flood, one of the FT’s commodity correspondents, explained. So a rise in cancelled warrants suggests more demand for the underlying physical commodity and deliveries thereof.
Profits in China's non-ferrous metal sector fall in 2009 despite rising output - 0 views
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Profits in China's non-ferrous metal industry declined in 2009 despite rising output due to low prices, according to statistics from the Ministry of Industry and Information Technology (MIIT).Output of 10 kinds of non-ferrous metals, including copper, alumina, zinc and lead, increased 5.8 percent in the country from a year earlier to 26.81 million tonnes last year.However, combined profit of 70 major enterprises in the sector totaled 17.6 billion yuan (2.58 billion U.S. dollars), down 1.46 percent year on year, the MIIT said.
BHP Billiton > Approval for Antamina Expansion - 0 views
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BHP Billiton today announced it has approved its share of the capital expenditure required to expand mining and processing capacity at the Antamina copper and zinc mine in northern Peru.Antamina is a joint venture between BHP Billiton (33.75%), Xstrata (33.75%), Teck Resources (22.5%) and Mitsubishi Corporation (10%). All four partners have approved their respective shares of the project's US$1,288 million capital budget (BHP Billiton share US$434.7 million).
CBR Gold Corp.: New High-Grade Discovery Expanded at Niblack - 0 views
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EDMONTON, ALBERTA--(Marketwire - Dec. 17, 2009) - CBR Gold Corp. (TSX VENTURE:CBG)(FRANKFURT:C3M) ("CBG" or the "Company") and joint venture partner Heatherdale Resources Ltd. (TSX VENTURE:HTR) ("Heatherdale") announce that thick intersections of high grade, copper-gold-zinc-silver mineralization have been encountered in underground drilling at the Niblack Project in southeast Alaska.
Coal up, copper down for Xstrata - 0 views
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SWISS major Xstrata has delivered record annual production of thermal coal, nickel, lead and zinc in concentrate, while copper output fell 5%.
UK - LME introduces Asian Benchmark reference prices - 0 views
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The London Metal Exchange (LME) announced that it launched new Asian Benchmark reference prices for LME copper, LME aluminium, and LME zinc. The exchange said that new unofficial three month futures prices for the above contracts will be published at the end of the Asian trading day. As published on 24th January 2011, the first LME copper Asian Benchmark price was US$9,550.00/t. The LME attributed the introduction of the new benchmark prices to the increasing futures trading volume on LMEselect, the exchange's electronic trading platform, during Asian time zones. It is expected that the new reference prices will provide a transparent view of the sentiment across Asian key metal and financial markets.
Teck Says China Partner to Add Customers - 0 views
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Teck Resources Ltd., Canada’s largest base-metals producer, said its partnership with China’s sovereign wealth fund will win the company more coal, copper and zinc sales and provide financing for future acquisitions.
Sterlite Q2 financials - 0 views
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The impact of lower aluminium and Zinc India performance was offset by higher copper business revenues.
Review of critical metal dynamics to 2050 for 48 elements - ScienceDirect - 3 views
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There are also many studies on copper in the case of nuclear, geothermal and biomass power plants.
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Assessing environmental implications associated with global copper demand and supply scenarios from 2010 to 2050
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How will copper contamination constrain future global steel recycling?
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