Archive for the ‘MINING’ Category

AIR & NOISE POLLUTION INFO IN MINING VIDEO

Sunday, November 27th, 2011

Air and noise pollution are two major concerns that communities have about neighboring mining operations. Governmental regulations are in place to limit the amount of air emissions allowed in the mining industry. Two types of air emissions must be controlled, point-source and fugitive emissions. Wet-suppression, Bag-house filtration, or enclosures can reduce point-source dust emissions. Wetting aggregate pile during loading, wetting roadways and controlling the speed limit of vehicles will reduce fugitive emissions. Blasting creates short term dust emissions and ground vibrations. Acceptable blasting times and vibration limits must be adhered to in order to minimize community complains. Enclosures will also reduce the amount of noise pollution emitting from the plant. Shrubs and trees will act as a buffer zone between operational noise and the community. Author: Maryland Center for Environmental Training / College of Southern Maryland Publication D

http://video.mining.com/?v=1164

Sourced & posted by Henry Sapiecha


IRON ORE PRICES DROP SUBSTANTIALLY TO EFFECT BOTTTOM LINE OF STEEL MAKERS

Friday, November 4th, 2011

More bad news for iron ore, coking coal prices: world’s largest steelmaker profits halve, sees worse ahead

Frik Els, 3 Nov 2011 – PERMALINK

ZeeNews report the world’s largest steel-maker Arcelor Mittal on Thursday reported a dip of over 51% in net income to $659 million for the quarter ended September 30, 2011, due to rising raw material costs and a fall in demand. The Indian giant also said it will face increasing pricing and volume pressures in the final quarter and is idling production as a result – it has mothballed eight furnaces in Europe and permanently retired another just over the last two months. Arcelor’s gloomy outlook prompted one analyst to observe: “We’re in a very dark market environment right now.”

Sourced & published by Henry Sapiecha

ROUGH DIAMONDS.THE WORLDS LARGEST SUPPLIER IS RUSSIA

Wednesday, November 2nd, 2011

Russia is the world’s largest source of diamonds in the rough.

In 2010, it accounted for 23.5% of the total diamond production in terms of volume, and 25% in terms of value.

New assessments from Frost & Sullivan, Outlook of the Russian Diamond Market, find that the market earned revenue of $4.79 billion in 2010 and is estimated to reach $5.74 billion in 2015. Deployment of modern equipment will be essential for productive outcomes in mining low-grade ore.

Sourcd & published by Henry Sapiecha

ZIMBABWE’S DIAMONDS NOW GOING AHEAD TO SELL TO THE WORLD OPEN MARKET

Wednesday, November 2nd, 2011

Zimbabwe allowed to sell diamonds again

Controversy continues to rage over mining in Zimbabwe’s Marange alluvial diamond fields, & Voice of America reports a deal has been reached to sell Marange diamonds.

According to the World Diamond Council, the agreement allows two Marange operations to sell diamonds on the international market and a third, run by Chinese interests, will be allowed to resume sales following third-party verification.

The agreement, reached in Kinshasa, Congo, was supported by members of the Kimberley Process, which is a system to prevent the sale of so-called “blood diamonds”.

The United States opposed the decision by abstaining from voting.

Sourced & published by Henry Sapiecha

RARE EARTH MINERAL VENTURES WILL FAIL AT THE RATE OF 96%

Wednesday, November 2nd, 2011

Nearly all of non-Chinese rare earth projects

will fail, says Jack Lifton

Andrew Topf

Consultants in the mining industry  say that the high processing costs and level of expertise required in bringing rare earth mines into production means most of them will eventually fail. In an interview with Reuters, Jack Lifton, founder of Technology Metals Research, said of the 244 companies hoping to extract REEs, less than 4% will be profitable: “The choke point for all the companies is the question of what they can do with the concentrated REM ore once it’s above ground. You can extract the rare earths together, but then you have to separate them…the world’s REM separation capacity is 99 percent Chinese and they have unused capacity,” Lifton said. “The Chinese overwhelmingly control this and that is the key to the rare earth industry. Without separation capacity, all you have is a loss-making ore concentrate company.”

Sourced &n published from mining journals by Henry Saoiecha

QUEENSLAND AUSTRALIA TO HAVE NEW COAL MINE BY BHP BILLITON

Tuesday, November 1st, 2011

BHP Billiton Approves Caval Ridge Mine Project

November 01, 2011

BHP Billiton today approved development of the Caval Ridge Mine project and expansion of the Peak Downs Mine in the northern Bowen Basin in Central Queensland, Australia. The initial project will add 8 million tonnes per year capacity (100 per cent basis) in export metallurgical coal, with the expectation of a rapid, low cost expansion to 10 million tonnes per year. This additional 2 million tonnes per year will only require the addition of mining equipment. This expansion has not yet been permitted.

The total investment in the initial project is US$4.2 billion, of which BHP Billiton’s share is US$2.1 billion. The resource life of the initial project is expected to be greater than 60 years1. First coal is expected in calendar year 2014.

The new Caval Ridge Mine will have the capacity to produce 5.5 million tonnes per year. The Peak Downs Mine will expand production by 2.5 million tonnes per year. The investment will include construction of a new coal handling and preparation plant at Caval Ridge to process production from the Caval Ridge Mine and Peak Downs expansion. Coal from the Peak Downs expansion will be transported by conveyor to the new plant. The Peak Downs Mine lies to the immediate south of the new Caval Ridge Mine.

The Caval Ridge Mine will be an open cut dragline and truck and shovel operation, with coal railed to the BHP Billiton Mitsubishi Alliance (BMA) Hay Point Coal Terminal. The project has received all necessary regulatory approvals.

BHP Billiton Metallurgical Coal President, Hubie van Dalsen, said: “This investment in the Caval Ridge Mine was foreshadowed in March of this year when BHP Billiton announced investments in the new 4.5 million tonne per year Daunia mine, the life extension of the Broadmeadow mine and the 11 million tonne per year expansion of the Hay Point Coal Terminal.

“This is a continuation of BHP Billiton’s strategy of investing in large, low cost, expandable mines with long lives. Additional expansion projects are being advanced to follow this investment in due course,” he said.

Sourced & published by Henry Sapiecha

COLTAN – [80%]FOR MOST OF THE WORLDS MOBILE PHONES MANUFACTURED COMES FROM THE CONGO

Tuesday, November 1st, 2011

COLTAN IS A RARE MINERAL FROM THE CONGO USED IN MOBILE PHONES

The Democratic Republic of Congo is one of the poorest countries in the world but is the home home to a nondescript black rock known as Coltan… a vital ingredient in the production of nearly every cell phone and computer on the planet. Without Coltan, our technology-driven lives would come to a screeching halt, and Congo has 80% of the world’s supply. It has lead to corruption and never-ending armed conflict that has devastated the country.

Sourced & published by Henry Sapiecha

NEWS ARTICLES FROM MINING NEWS ON VARIOUS SUBJECTS

Wednesday, October 19th, 2011

Various articles on commodities from mining magazine

$25 million spent in Albania by Tirex Resources going a long way

Receives unanimous community support for mining permit applicationsSubmits all required mining application documentation

New Gold goes all-in at Blackwater

Vancouver – New Gold (NGD-T, NGD-N) has put pen to paper with two B.C.-focused junior gold explorers holding land near the company’s most recent acquisition, the Blackwater gold-silver project, located 150 km southwest of Prince George.

La Ronge Gold Corp Announces a Private Placement

VANCOUVER, BRITISH COLUMBIA–(Marketwire – Oct. 18, 2011) – La Ronge Gold Corp. – (TSX VENTURE:LAR) (the “Company”) announces it will undertake a private placement (the “Placement”) consisting of 1,600,000 flow-through units (the “FT Units…

Pebble to challenge borough ordinance in Alaska Superior Court

VANCOUVER, Oct. 18, 2011 /PRNewswire/ – By a narrow 280 – 246 (53 – 47%) margin, voters in Southwest Alaska’s Lake & Peninsula Borough have supported a ballot measure that, if upheld by the courts, would restrict future development that affects more than one square mile of land within the 31,000 square mile borough. The Pebble Limited Partnership (the “Pebble Partnership” or “PLP”) and the State of Alaska view the initiative sponsored by anti-Pebble activists as unconstitutional and unenforceable because it seeks to restrict development of state-owned resources on state lands through a municipal ordinance, and will challenge it in Alaska’s Superior Court.

Northern Vertex announces $12.65 million non-brokered private financing

VANCOUVER, Oct. 18, 2011 /CNW/ – Northern Vertex Capital Inc. (TSXV: NEE) (“Northern Vertex”) is pleased to announce a Non-Brokered private placement (the “Private

Alaska voters say no to gold, copper mine 1:58 am APNews

Voters of a small southwest Alaska borough narrowly passed a measure blocking a proposed gold and copper mine that conservationists said would have threatened one of the world’s premier wild salmon fisheries in a local election that gained national…

Barkerville Gold Mines intercepts 21.5 meters (70.5 feet) of 9.97 g/T (0.291 oz/t) gold including 2.8 meters (9.2 feet) of 52.0 g/T (1.516 oz/t) gold on Cow Mountain

Further to the news releases on the high grade VG-cosalite-quartz-pyrite zones discovered by the Company on Cow Mt. reported by the company respectively on June 27, July 26 and September 13, Barkerville Gold Mines Ltd. (TSX VENTURE:BGM)(FRANKFURT:IWUB) (the “Company”) reports the more significant intercepts of drill results conducted on Cow Mt. recently.

Greens tying up Olympic Dam with new parliamentary inquiry, $30 billion project faces delays

News reports from Australia say BHP Billiton may face delays in getting approvals for its $30 billion Olympic Dam expansion, as Greens and other minor parties holding the balance of power in the South Australian Parliament push for an inquiry into the project. The legal agreement between BHP and the State Government will be introduced to parliament on Tuesday or Wednesday, but the Greens now want BHP Billiton officials to appear before a parliamentary committee to investigate the indenture legislation for the expansion. The project will create an open pit mine adjacent to the current Olympic Dam underground operation that would be the world’s biggest – trucks will haul overburden 24/7 for five to six years just to reach the ore body.

Sourced & published by Henry Sapiecha

GERMAN AVIATION GROUP CORDNER SEE BENEFITS GETTING INTO THE MINING SECTOR

Friday, August 26th, 2011

GERMAN AVIATION GROUP GETTING INTO THE MINING SECTOR

(Berlin, Germany) Following extensive research, Cordner Aviation Group (CAG) has announced it will enter the growing worldwide mining, exploration and energy market sectors, offering aircraft with conversions based on proven Bae 146 and Avro RJ platforms. These are purpose-outfitted for the mining industry’s unique requirements. According to Stewart Cordner, the company’s president, “You might say we found a golden opportunity in this often overlooked market and the initial reactions to the Surveyor and our range of design concepts–resulting from many candid conversations with prospects in the mining industry–have been totally positive.”

The Surveyors will come from CAG’s growing remarketing portfolio of BAe 146s and Avros in a range of models.  The selection process is owner-driven and the aircraft selected for conversion depends on the specific requirements, such as average number of passengers, operational locations, distances, cargo capabilities and landing/takeoff conditions.

Says Cordner, “The 146s and Avros are not strangers to mining and energy exploration and in fact have earned high marks over the years in operations worldwide. So what we are doing now is building on a proven basic platform and greatly enhancing it based on our extensive customer needs analyses and using new technologies now available to us. For example, we have identified and plan to reduce the operating weight empty (OWE) by over half a ton over the basic passenger aircraft currently in use worldwide. The benefits are significant in terms of fuel saving, increased performance and positive environmental contributions.”

He points out number factors that will make the Surveyor so attractive to mining and exploration companies: “The aircraft has all-around excellent hot and high performance, as well as outstanding short field capability. That can be nothing more than a gravel or dirt airstrip, located potentially right where the mine is located. By taking this mine/customer-centric approach, we can minimize the permanent “land take” for the airfield, which also greatly reduces the environmental impact and, naturally, provides the industry with a maximum production and logistical upside.

The aircraft, with 112 seats or less, is also approved for short runways, such asLondonCity, which means it can make very steep approaches over rough terrain typical of mine locations. And when it lands, it is quite independent with an electric internal starter system and integral air stairs and several other autonomous features.

The initial Surveyor designs include a quick-change (QC) capability. For example, from all-passengers, to passengers and a separate VIP module, to passengers and a Medevac LifePort™ separate cabin. But at the end of the day, it all depends what the customer requires for his flight operation.

Adds Cordner, who has worked with the Bae 146/Avro series over 20 years, at least half of those “hands on” in the field with customers and their operations. “These aircraft have been simply and ruggedly built originally to airline standards and for high utilization at remote locations. Considering their fuel efficiency, low acquisition and operating costs, and a 60,000-hour lifespan barely touched, they have to be the best bargains in the air. Add to that the fact that it has the lowest noise print of any similarly sized jet and meets all current emissions standards, our Surveyor is kind to the environment as well.

(Berlin, Germany) Following extensive research, Cordner Aviation Group (CAG) has announced it wiis now entering the growing worldwide mining, exploration and energy market sectors, offering aircraft with conversions based on proven Bae 146 and Avro RJ platforms. These are purpose-outfitted for the mining industry’s unique requirements. According to Stewart Cordner, the company’s president, “You might say we found a golden opportunity in this often overlooked market and the initial reactions to the Surveyor and our range of design concepts–resulting from many candid conversations with prospects in the mining industry–have been totally positive.”

The Surveyors will come from CAG’s growing remarketing portfolio of BAe 146s and Avros in a range of models.  The selection process is owner-driven and the aircraft selected for conversion depends on the specific requirements, such as average number of passengers, operational locations, distances, cargo capabilities and landing/takeoff conditions.

Says Cordner, “The 146s and Avros are not strangers to mining and energy exploration and in fact have earned high marks over the years in operations worldwide. So what we are doing now is building on a proven basic platform and greatly enhancing it based on our extensive customer needs analyses and using new technologies now available to us. For example, we have identified and plan to reduce the operating weight empty (OWE) by over half a ton over the basic passenger aircraft currently in use worldwide. The benefits are significant in terms of fuel saving, increased performance and positive environmental contributions.”

He points out number factors that will make the Surveyor so attractive to mining and exploration companies: “The aircraft has all-around excellent hot and high performance, as well as outstanding short field capability. That can be nothing more than a gravel or dirt airstrip, located potentially right where the mine is located. By taking this mine/customer-centric approach, we can minimize the permanent “land take” for the airfield, which also greatly reduces the environmental impact and, naturally, provides the industry with a maximum production and logistical upside.

The aircraft, with 112 seats or less, is also approved for short runways, such asLondonCity, which means it can make very steep approaches over rough terrain typical of mine locations. And when it lands, it is quite independent with an electric internal starter system and integral air stairs and several other autonomous features.

The initial Surveyor designs include a quick-change (QC) capability. For example, from all-passengers, to passengers and a separate VIP module, to passengers and a Medevac LifePort™ separate cabin. But at the end of the day, it all depends what the customer requires for his flight operation.

Adds Cordner, who has worked with the Bae 146/Avro series over 20 years, at least half of those “hands on” in the field with customers and their operations. “These aircraft have been simply and ruggedly built originally to airline standards and for high utilization at remote locations. Considering their fuel efficiency, low acquisition and operating costs, and a 60,000-hour lifespan barely touched, they have to be the best bargains in the air. Add to that the fact that it has the lowest noise print of any similarly sized jet and meets all current emissions standards, our Surveyor is kind to the environment as well.

Sourced & published by Henry Sapiecha

AFRICAN MINERAL COMPANY WINS CONTRACT IN INDIAN IRON ORE

Friday, August 26th, 2011

Weir Minerals Africa wins major screening

order in Indian iron ore mining

weir1.jpg

Weir Minerals Africa has received its biggest order from India to date – seven Linatex vibrating screens of various sizes for RBSSN, a mining and metals company based in Hospet, in northern Karnataka.

The order includes the biggest screen Weir has supplied to India, with dimensions of 2.4 m by 4.8 m. Weir Minerals Africa’s Chris Dorlas says the order, which is destined for an iron ore application, is a milestone for the company, since it firmly establishes Weir Minerals’ footprint in India and will serve as a reference base for further sales in that country.

The RBSSN order includes three VD18/38, one VD15/38 and one VD21/48 dewatering screens. Linatex dewatering screens incorporate a 45o sloping back section, fitted with slotted apertures across the direction of the flow. Incoming slurry is fed uniformly along the top of this back section, which acts as a vibrating drainage panel. The screen’s main deck slopes upwards at 5o and is fitted with smaller slotted apertures.

“This design achieves exceptionally high dewatering and draining capacity,” Dorlas says, “making it possible in many cases to use smaller units than if one was using conventional dewatering screens. This, in turn, reduces the cost of the initial investment in the screens.”

At the lowest point of the screen, where the sloping back and main deck meet, a pool of partially dewatered slurry forms. Here, solid particles bridge over the apertures and form a cake, which acts as a filtration platform, allowing only quite fine particles to pass through. The vibration action conveys the cake along the screen and out of the pool, where further dewatering takes place, depending on the porosity of the cake, which is finally discharged over the adjustable weir into the product chute.

Vibration is produced by two linear motion low noise exciter motors operating at 980 or 1460 rpm. Alternatively, geared exciters with an external drive motor can be fitted to the larger screens. Both the vibrating motors and the geared exciter have been specifically designed to ensure long life, with minimum maintainance requirements.

Easy adjustment of the amplitude of vibration and deck inclination, as well as the discharge weir plate, are features incorporated to suit changes in process requirements. A high solids recovery outcome is achieved when the screen underflow is kept in closed circuit, with the only solid losses occurring as the very fine material exits in the cyclone overflow.

The two large Linatex HG24/48 screens included in the RBSSN order are horizontal linear motion screens. Linear motion is produced by the action of counterweights on separate shafts, geared together to produce a straight line “throw”. The mechanism’s direction of rotation does not affect the pattern of motion.

“Linear motion provides excellent performance in applications such as wet screening, desliming and dewatering, owing to the ability to break the surface tension between deck apertures and the pulp being screened,” Dorlas says. “Screen capacities vary widely, depending on the material characteristics and the separation required.

“Screen design has evolved and improved over many years of operational experience and industry know-how. However, the company has actively taken these improvements to the next level and introduced the Finite Element Analysis (FEA) method of design to our development technology some years ago. Our in-house FEA capabilities have assisted in optimising the mass and strength of the screens, helping to provide lower cost solutions, both in terms of capital and operational costs.”

The Weir Group acquired the Linatex group of companies in September 2010, now marketed as Lintex® rubber products. Dorlas says that these products are proving a valuable addition to the Weir Minerals product line and assist the company in positioning itself as a solutions provider. The South African Linatex manufacturing facility in Alrode is capable of producing screens up to 4.9 m wide by 10 m in length.

Sourced & published by Henry Sapiecha

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