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21st Century Support
Shotcrete technology evolves as both equipment manufacturers and chemical companies strive to improve performance
By Simon Walker, European Editor
Although invented as a constructional material in the early 1900s, shotcrete is essentially a late-20th Century means of support. The development of the New Austrian Tunneling Method (NATM) in the late 1950s and early 1960s provided a major boost to its use in rock support, with the mining industry then picking up the baton from its construction counterpart. The NATM concept relies upon the use of shotcrete to provide immediate active support after each round of advance, with additional support then being installed with a combination of rockbolts, cable bolts and either sprayed or cast permanent concrete linings. Essentially, the shotcrete is used to prevent initial deformation of the heading profile and to allow the rock-mass structure to remain self-supporting until the later stages of support can be installed...... read more
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FEATURE - Truck Driver Training |
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Haul Truck Operator Training at the Esperanza Mine Project
A three-pronged approach to selection and training provides an 80%-plus success rate
By Rodrigo A. Díaz Bórquez
The Esperanza copper-gold project, situated in the Sierra Gorda district of Antofagasta, northern Chile, is jointly owned by Antofagasta Minerals (70%) and Marubeni Corp. (30%). Management understands that, as the first low-grade sulphide copper-gold project in Chile, development of an effective training process for unskilled labor is a strategic task for constructing its company culture and achieving productivity targets. The training process at Esperanza includes extensive use of simulators and relies heavily on feedback relative to behavior and culture from the instructor to the apprentices. This article describes the results obtained from training 59 apprentices in haul truck operation …...
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Technology Allows Mine Planners to Consider More Detail
Integration and communications are the key to preserving value over the life of mine
By Steve Fiscor, Editor-in-Chief
EMine planners are under constant pressure to create long- and short-term plans that represent optimal mining strategies using a complex set of data inputs. As much as mine financiers and executives would like a long-term plan to be set in stone, the reality is that mine plans are dynamic works in progress. With proper planning and design, a mining company can develop a plan to extract minerals at the highest rate of return on investment.....
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For more companies with products in the Software market - Go Here |
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Lihir Gold Installs Elevated Thickeners - FLSmidth has been awarded a contract to supply two elevated thickeners for the expansion program at Lihir Gold Ltd.’s (LGL) gold mine on Lihir Island in Papua New Guinea. Each of the two 7,500-m3/h-capacity thickeners will be 48 m in diameter and will be fitted with a hydraulically driven bridge drive, making them among the world’s largest bridge-drive thickeners. They will be designed and fabricated in Australia, supplied "piece large" to accommodate the restricted lay down and site construction areas on the island, and barged to site …. read
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Vertical Mills Gain Size While Drives Get Simpler - Two recent developments in vertical mill applications highlight the industry’s increased focus on energy-efficient grinding of ores and construction materials, as well as on improved electrical performance and safety features of vertical mill drive systems. Metso reported the first 3,000-hp (2240-kW) Vertimill (VTM) will be installed at Newcrest Mining Ltd.’s Cadia Valley gold mine in New South Wales, where it will operate in a tertiary grinding circuit. According to Metso, the Cadia operation already has several smaller Vertimills running in regrinding circuits, with another VTM grinding SAG…… read
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Gas Detectors for Mine Applications - U.K. based Trolex, which specializes in safety monitoring equipment, notes that its STX3241 and STX3261 toxic and flammable gas detectors and TX5920 Vortex air flow sensors have been used to monitor CH4, CO and air flow at the Svea Nord mine in Norway. The sensors have a high-strength molded housing sealed against dust and moisture to IP65 standard and EMC protection, making the systems reliable in the extreme, arduous conditions in the mine. All the sensors have ATEX M1 approval. The STX3261 is a robust, dust and waterproof pre-calibrated gas detector which utilizes a….
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Versatile Underground Diesel-Powered Tractor
- Fairchild International, a manufacturer of underground mining equipment, offers the Model 35C-WHPDT Workhorse permissible diesel tractor, the latest addition to the company’s line of permissible and non-permissible diesel-powered underground scoops. The tractor features a fifth-wheel hitch that can be located as specified by the customer and is part of a system for transporting materials, supplies and equipment to underground mines through the toughest conditions faster and more efficiently than other equipment. The unit also can be converted to a utility scoop by removing the fifth wheel .……
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Battery-Powered Unit Monitors Machine Conditions Wirelessly - SKF says its Multilog On-line System WMx is designed to improve machine reliability, reduce installation costs and increase personnel safety in industrial applications. Multilog WMx is a compact, battery-powered, eight-channel, field-mounted monitoring device that communicates using standard 802.11b/g wireless networking. It collects acceleration, velocity, displacement, temperature and bearing condition data and uploads it to proprietary SKF software for viewing….
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Hoist Chain System is Lighter, Safer
- Industrial-chain specialist RUD announced its ICE Grade 120 Mecano hoisting chain system was recently recognized with an award from a prestigious German industrial insurance organization (BG RCI). The Mecano system comprises a range of slings for safe lifting and moving of heavy loads, incorporating a novel, patented steel to provide improved performance. The system, according to the company, combines heavy lifting capability with lightweight construction, as net weight can be reduced as much as 30% compared with competing systems—an important consideration for workers subject…. read
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Filter Press Line Features Shorter Cycles - Micronics reports that the line of LASTA MC (mining concentrate) filter press it distributes for Japanese manufacturer Ishigaki Co. Ltd. is successfully dewatering mine tailings and mineral concentrates throughout the world, with more than 100 machines in service—many with over 20 years of trouble- free operation. Ishigaki’s Sakaide, Japan, factory designs and produces the LASTA MC filters, which are claimed to offer short filter cycles and discharge filter cakes faster than conventional machines. Micronics says Ishigaki is currently the only manufacturer of fully automatic.….
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Tire Pressure Monitor System Installs - Easily Doran Manufacturing’s 360CE tire pressure monitoring system is designed for mobile equipment used for mining, construction and earthmoving applications. According to the company, programming and installation of the digital LCD display and valvemounted sensors can be accomplished without any special tools in less than an hour. The sensors are made from highimpact nylon and include potting material to secure internal components and provide protection against vibration and.….read
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Solar-Powered Wireless Communications - Carlson Wireless Technologies has integrated a new Power over Ethernet (PoE) device into its solar-powered wireless product line. According to the company, the new PoE unit increases system efficiency by up to 45%, allowing for greater solar system run times. Other benefits include reductions in required solar panel size as well as the elimination of costly inverters. Carlson Wireless engineers also note that the new PoE allows a significant increase in powered…. read
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JUNE 8–10, 2010: Euro Minexpo 2010, Skellefteå, SwedenContact: Nolia; Tel: +46 (0)60 55 00 06; E-mail: info@eurominexpo.com; Web: www.eurominexpo.com |
JUNE 8–11, 2010: ACG Advanced Application of Seismology in Mines Seminar, Perth, Western Australia Contact: The Australian Center for Geomechanics; E-mail: acg@acg.uwa.edu.au; Web: www.acg.uwa.edu.au/events_and_courses |
JUNE 13–17, 2010: 13th U.S./North American Mine Ventilation Symposium, Sudbury, Ontario, Canada.Contact: Dale McKinnon; Tel: +1 (705) 675-1151 ext.5074; E-mail: dmckinnon@mirarco.org ; Web: www.mirarco.org/minevent |
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JUNE 14–17, 2010: SDIMI 2011, Sustainable Development Indicators in the Minerals Industry, Aachen, Germany Contact: Mirjam Rosenkranz; Tel: 49-(0)241-80-9 5673; Fax: 49-(0)241-80 92-272; E-mail: i.me.journal@hotmail.com or sjayanthu@rediffmail.com |
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JUNE 29–30, 2010: ACG Open-Pit Rock Mass Modeling Seminar, Perth, Western Australia. Contact: The Australian Center for Geomechanics; E-mail: acg@acg.uwa.edu.au; Web: www.acg.uwa.edu.au/events_and_courses |
JULY 26–28, 2010: Africa Mining Congress 2010, Johannesburg, South Africa. Contact: Steel & Metallurgy; Tel: 91 33 32906314; Fax: 91 33 24415700; E-mail: info@steelmetallurgy.com; |
AUGUST 6–7, 2010: 5th International Iron & Steelmaking Conference, Visakhapatnam, India Contact: Nolia; Tel: +46 (0)60 55 00 06; E-mail: info@eurominexpo.com; Web: www.eurominexpo.com |
AUGUST 24–26, 2010: Argentina Mining 2010, San Juan City, Argentina Contact: Carolina Martínez Hansen; Tel: 54 (261) 424-3479; E-mail: carolina@argentinamining.com; Web: www.argentinamining.com |
For a full calendar of
mining industry conferences and events -
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Atlas Copco - Minetruck MT42
BSuperior Productivity in Underground Haulage. This high-speed 42 tonne articulated truck has been designed to maximize productivity as well as provide increased safety and excellent operator comfort in underground haulage applications. The Minetruck MT42 is now available in Scandinavia and Canada and will be launched globally in 2011. The Minetruck MT42 is powered by a Cummins QSX15 520 hp EPA Tier 3/Stage IIIA engine, coupled with proven drivetrain components, delivering reliable performance and high speed on ramps... watch the video
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Sandvik - The Company
Sandvik Mining and Construction proudly presents its company movie. In the movie you can experience our values, customer focus and products in action... watch the video
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PowerScreen - The Mobile Crushing Expert
Powerscreen is an expert in the design and manufacture of mobile crushing, screening and washing equipment.Galvanising global resources, decades of experience and in-depth industry knowledge to bring to the market a comprehensive product portfolio for the quarry, mining, and recycling industries.Powerscreen products operate in the toughest environments and feature nominal set-up times, market leading productivity rates and excellent reliability... watch the video
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EnsSolutions - Tailings Control
The Next Generation of Soil Stabilization Emulsion.
EnsSolutions manufactures, distributes and applies organic liquid emulsions to meet industrial and commercial market demands, ranging from mine tailings control to dust control . Our focus is providing premium products and services. Our responsibility is recognizing the sensitivity of our environment... watch the video
www.enssolutions.com
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Mine Master - Specialists Underground
Mine Master Ltd. are one of the biggest worldwide mining equipment manufacturers. Specilaists in underground drilling, the company produces roof bolting rigs, underground drill rigs and other underground mining equipment. The company also produces a wide range of tools for its mining machinery... watch the video
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