| Labor Department Report on Crandall Canyon Slams MSHA -
In late March, the Inspector General’s office of the U.S. Department of Labor (DL) issued an 80-page report that blamed regulators at the federal Mine Safety and Health Administration (MSHA) for negligence in approving a roof-control plan for the Crandall Canyon mine. The report from Assistant Inspector General Elliot Lewis said MSHA could not show it made the right decision when it approved risky retreat mining at Crandall Canyon. MSHA is part of the Labor Department…... read
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Diesel Engine Suppliers Map Emissions- Reduction Strategies for 2011 and Beyond
Although the next set of increasingly stringent emissions standards for off-highway diesels are years away, engine builders are laying the groundwork now for meeting both interim and final regulations
By Russell A. Carter, Managing Editor
It’s no surprise that off-highway diesel engine builders who plan to sell their products in the United States, Europe, Canada and Japan in the near future are taking the low road—it’s a mandatory path of successively lower particulate matter (PM), carbon monoxide (CO) and nitrogen oxide (NOx) emissions that will lead them by the year 2014 to a point at which their entire off-highway engine lineup must comply with drastically tougher , near-zero emissions regulations. For mid-range diesels in the 174- to 751- hp category, the next milestone on this road is the U.S. Environmental Protection……. read
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Los Filos Gold Project Sets Mining Standard in Mexico
Goldcorp’s newest mine is moving in the direction of world-class status, and is likely to be around for a long time.
By Mark W. Sprouls
Goldcorp’s Los Filos project in southern Mexico promises to be one of the largest open-pit mines in the country. With commercial production just getting under way this year, the mine also has the potential to be the most efficient. Adjacent to the Nukay mining and milling operations of the Goldcorp Luismin division, Los Filos has grown up under the watchful eyes of Luismin veterans. "Being here from day one and participating in the design, construction...... read
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 Hydraulic Excavator Overhauls — When and What to Plan For
New design techniques, materials and maintenance concepts can help extend shovel life to 100,000 hours or more, but it also requires a collaborative effort from the customer, dealer and OEM
By Russell A. Carter, Managing Editor
A major milestone at any surface operation occurs when a shovel is commissioned and takes its first bite of ore or waste as part of the production fleet. For mine managers and mechanics alike, it’s a moment of relief that quickly dissolves into maintenance concerns—what can we do to keep this…...
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 Improve Screen Performance with Proper Selection and Maintenance
New equipment options, broader availability of customized designs and appropriate maintenance can help plant operators shake out vibrating screen problems
Keeping plant equipment running at peak—or even just acceptable—levels of performance requires continuous attention and planning. It’s an ongoing activity that can be characterized as a thin coin with "profit" stamped on one side and "loss" on the other. The trick is to balance the coin on its edge, keeping necessary maintenance expenses in equilibrium with pressure to trim operating costs. Go too far in either direction, and the coin topples—often with unpleasant financial.....
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Underground Haulage Equipment Trends
There’s a high level of industry interest in larger underground trucks, and loaders that can operate efficiently in large- and small-diameter workings. What’s not so apparent is which underground automation system—if any—will grab the lion’s share of the UG market.
By Kyran Casteel, E&MJ European Editor
Keeping plant equipment running at peak—or even just acceptable—levels of performance requires continuous attention and planning. It’s an ongoing activity that can be characterized as a thin coin with "profit" stamped on one side and "loss" on the other. The trick is to balance the coin on its edge, keeping necessary maintenance expenses in equilibrium with pressure to trim operating costs. Go too far in either direction, and the coin topples—often with unpleasant financial.....
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Belt Monitoring System Focuses on Steel Cord Damage and Wear - One of the first major product introductions from Veyance Technologies, the company which acquired Goodyear Tire & Rubber’s Engineered Products brand and business, is an advanced monitoring system that looks inside steel-corded conveyor belts to check for internal damage or abnormal wear. Unveiled in late February, the Goodyear Cord Guard system provides real-time data that can alert mine operators in time to avoid more costly problems and unexpected downtime …. read
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 New Truck Body Design from VR Steel - South African steel fabricator VR Steel says it has developed an innovative haul truck body design which, due to its unique design features, can significantly reduce operating costs per ton. The first two truck bodies are currently in operation at the Sishen iron ore mine in Northern Cape, South Africa. VR Steel’s Managing Director, John van Reenen, described the truck body as "a revolutionary design" that fits in with the company’s scope .…… read
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Equinox Uses Equipment Simulators to Get Head Start on Operator Training at Lumwana - Equinox Resources, developer of Lumwana, Africa’s largest greenfield copper project (See E&MJ, March 2008, "Central Africa’s Copper Renaissance," p. 56) isn’t skittish about embracing new mining technology. For example, it is introducing the world’s first AC-electric drive haul truck trolley-assist system at that Zambian mine to reduce fuel and maintenance costs for 27 Hitachi EH4500-2 242-mt dump trucks. The trucks will be loaded by a fleet of Hitachi EX5500 hydraulic excavators….
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FLSmidth’s New Cone Crusher
- The new Raptor XL900, from FLSmidth Excel features a higher pivot point and larger crushing stroke, to deliver more crushing action from the first nip at the feed opening and through the chamber until the material exits the parallel zone. The XL900 has a maximum throughput capacity of almost 1,400 tph. The unit handles feed size up to 14.57 in. (313 mm) and easily allows a reduction ratio of up to 6:4. The active feed opening provides a desirable .……
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Godwin High-Head and Submersible Pumps - Godwin Pumps displayed the single stage HL110M Dri-Prime pump, capable of handling heads to 615 ft. The 4- x 3-in. unit can pump up to 500 gpm and passes solids up to 3/4 in. in diameter. With a working pressure of 276 psi and 87 psi of suction pressure, Godwin touts the HL110M pump as ideal for mine and quarry dewatering, high pressure water supply for sand and aggregate washing, tunnel shaft dewatering, and temporary fire systems….
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HEX-Mounted Rock Drills from Junttan
- Junttan Oy, a Finnish company, presented its line of RockDrills designed to be mounted on hydraulic excavators. The RockDrill line, which includes models capable of drilling hole diameters ranging from 30 to 127 mm, is topped by the flagship model 45A/51A. The 45A, designed for both utility drilling as well as production drilling, is suitable for mounting on excavators weighing more than 30 tons and has a hole diameter capability of 51- 102 mm. The 51A is intended specifically…. read
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SSAB’s Hardest Wear Plate Steel is Shop-Workable - SSAB Oxelösund plans to introduce what it claims is the world’s hardest quenched and tempered steel plate, offering a maximum hardness of 700 Brinell. According to the company, the new product, labeled Hardox Extreme, has been undergoing testing since 2004 and has had good results when compared with competing products such as Ni-hards, overlays and chromium-rich castings. For sliding wear, wear resistance is approximately.….
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Topcon Introduces Advanced Survey Station - Topcon Positioning Systems’ lineup of robotic total stations now includes the IS model, latest in the product line that Topcon introduced in 2005 with its GPT- 7000i total station. The IS offers advanced 3-D modeling capabilities that allow for 3-D model creations with image integration and volume measurements. Three distinct features unique to the marketplace, according to Topcon, include: Intelligent- Scan, which automatically recognizes.….read
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 Volvo’s Full Suspension Artics Ready for the Market-
Volvo Construction Equipment (Volvo CE) announced that it will begin delivering the new E-Series articulated hauler with Full Suspension (FS) in the second quarter of 2008. The FS version of Volvo’s A40E is the first hauler to offer a suspension system with automatic leveling and stability control on all wheels. Overall, the E-Series artic line includes seven new models, ranging in capacity from the 26.5-mt…. read
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| MAY 12-16, 2008: Mineral Processing — An Introduction to the Principles. Colorado School of Mines, Golden, Colorado, USAOffice of Special Programs and Continuing Education; Tel: 303-273-3321; Fax: 303-273-3314; Email: space@mines.edu;
Web: www.mines.edu/outreach/cont_ed |
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| MAY 14-15, 2008:
The Canadian Mining & Industrial Expo
2008, Sudbury, Ontario. Contact:
Darren Ceccarelli; Tel: 705-929-7469; Fax:
705-525-0626; E-mail: dac@vianet.ca;
Web: www.dacshows.com
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| JUNE 9–11, 2008:
MASSMIN 2008–5th International Conference
& Exhibition on Mass Mining, Luleå Technical
University, Luleå, Sweden. Contact:
Prof. E Nordlund; E-mail: info@massmin2008.com;
Web: www.massmin2008.com |
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| JULY 22-24, 2008: Queensland
Mining & Engineering Exhibition 2008, Mackay,
Queensland. Contact: Reed Exhibitions; Tel: 02 9422 2955; Fax: 02 9993 8342; Web: www.qme.reedexhibitions.com.au
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SEPTEMBER 22-24, 2008: MINExpo 2008, Las Vegas, Nevada, USA Contact: Hall Erickson; Tel: 800-752-6312; Fax: 630-434-1216; E-mail:
minexpo@heiexpo.com;
Web: minexpo.com |
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SEPTEMBER 24-28, XXIV International Mineral Processing Congress (IMPC), Beijing, China Conference Secretariat; Tel: 86-10-68310569; Fax: 86-10-68317050; E-mail:
impcexhibition@gmail.com |
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| OCTOBER 1-3, 2008: PROCEMIN 2008, Santiago, Chile Contact: Fabiola Bustamante; Tel: 56-2 652 1555; Fax: 56-2 652 1570; E-mail:
info@procemin.cl;
Web: www.procemin.cl |
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NOVEMBER 13-14, 2008: TZMI Congress–Asia in Focus 2008, Singapore. Contact: Daniel Navaratnam; Tel: 61 (0)8 9359 6000; E-mail:
data@tzmi.com.au Web: www.tzmi.com |
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| For a full calendar of
mining industry conferences and events -
click
here |
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 Golden Star Resources Ltd. announced that Tom Mair has been appointed president and CEO and a member of the board of directors. He has been serving as interim president and CEO since December 2007 |
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Coeur d’Alene Mines Corp. announced the appointment of Bibiana Betancourt as director of corporate social responsibility. The company also announced the appointment of Mitchell J. Krebs as senior vice president–CFO. He replaces James A. Sabala who has resigned. The company’s chief accounting officer, Thomas T. Angelos, has been promoted to senior vice president and chief accounting officer and Ken Koski has been appointed controller.
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 Dominion Mining Ltd. announced the appointment of Jonathan Shellabear as managing director. Peter Alexander, current managing director, has retired from executive duties and will remain on the board as a nonexecutive director.
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U.S.Steel Corp. announced a series of management changes: David H. Lohr will return to U.S. Steel’s Pittsburgh headquarters from Europe to fill the new position of senior vice president-North American flat-roll operations; George F. Babcoke will succeed Lohr as senior vice president-European operations and president-U.S. Steel Kosice and relocate to Slovakia. Lohr will direct the newly divided executive oversight of the company’s North American flat-rolled steelmaking operations and also oversee supply chain management. Anthony R. Bridge has been named vice president-operations, East, and Michael S. Williams has been elected vice president-operations, Midwest. John C. Price has been appointed vice president-supply chain, and J. James Kutka, Jr., who currently serves as senior vice president-commercial, will fill the redefined role of senior vice president-sales and customer service. |
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 CanAlaska Uranium Ltd. announced the appointment of Dr. Guy Marquis as head of the company’s geophysical exploration team. |
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Sovereign
Quebec Stakes Claim to Best Policy for Mining - Prospectors and investors looking for a stake in the mining sector should turn to Quebec, as La Belle Province is seen by mining executives as having the best policy environment in the world for investment, according to the Survey of Mining Companies 2007/2008, released by independent research organization The Fraser Institute.
U.S. Silver Increases Production 39% in Early 2008
- Saying that production throughput in both the Galena and the Coeur mills increased significantly in January 2008 compared to 2007 third and fourth quarter levels, U.S. Silver announced a 39% increase in tonnage treating 615 tons per day ( t/d) of ore per day versus a fourth quarter average of 444 t/d. The January levels were also up 86% compared to third quarter levels which averaged 330 t/d. This increase was largely a result of the 
Sterling Mining Hosts Ribbon Cutting Ceremony at the Sunshine Mine
- Sterling Mining Co. hosted a ribbon-cutting ceremony on March 26, 2008, near Wallace, Idaho, to formally celebrate the Sunshine mine’s return to production, which occurred in December 2007.
Apex Silver Provides Update on San Cristobal and New Bolivian Mining Tax - In 2008, Apex Silver Mines expects San Cristobal to produce approximately 16 million ounces of payable silver at an average cash operating cost ranging from approximately negative $3 to $3.50/oz (the lead by-product credit, assuming a lead price of $0.80/lb, results in a negative cash operating cost for silver), 235,000 tons of payable zinc at an average cash operating cost ranging from approximately $0.65 to $0.75/lb, and 80,000 tons of payable lead (the net smelter return value of lead is credited as a by-product to silver production costs). The company expects metals….
New Generation Locomotives Arrive in the Pilbara - The first installment of a fleet of new generation locomotives has arrived in Dampier to haul iron ore on Rio Tinto’s 1,300-km Pilbara rail network. The 10 locomotives mark the beginning of a major investment in rail infrastructure and rolling stock to keep pace with rapid mine expansions and increases in port capacity. Rio Tinto will progressively upgrade its locomotive fleet to the new General Electric model, which will produce significantly lower emissions than existing diesel engines…. 
China’s Jinfeng Gold Mine Restored to Full Production - Sino Gold Mining reported during late February that the power supply in Guizhou Province has returned to normal and the company’s Jinfeng mine is now operating at full power. Following the severe winter ice storms which caused major disruptions on China’s power and transport systems during the recent Chinese New Year holidays, the power restrictions imposed in late January have been lifted. During this period, Jinfeng continued gold production at a reduced rate….
Power Shortages, Safety Issues Hindering South African Mining Industry - E&MJ's Africa-based editor Antonio Ruffini, reports that the 2008 Mining Indaba—Africa's annual counterpart to the Prospectors and Developers Association of Canada (PDAC) conference—was the largest yet in the event's 13-year history. More than 5,000 delegates from around the world and ranging from geologists to fund managers, attended and many more were involved in off-shoot events that swirl around the Indaba’s center of gravity. Tim Wood, vice president of International Investment Conferences, the group that organizes the Indaba, said that $1.5 trillion dollars in public company valuations…. 
