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Mining Weekly Features

Size DOES count!

By: System Author     26th March 1999 In geographical areas with abundant soft coal or lignite deposits, this fossil fuel is mined on a very large scale – on the order of several hundred million tons a year in Germany alone, explains Hartmut Schimkat of Siemens. To cope with the enormous quantities of waste sand that must be... 

R57m access tunnelling contract

By: System Author     26th March 1999 A R57-million primary-access tunnelling contract has been awarded to RUC Mining Contracting Company by Anglogold. The contract comprises 12 km of twin-end tunnelling on 105 level, about 2 300 m below surface at Anglogold’s Elandsrand mine near Carletonville. The contract was awarded based... 

R80m opencast-mining contract

By: System Author     26th March 1999 MINING company and Concor Roads division Concor Opencast Mining has been awarded a contract worth R80-million from Amplats for the opencast mining operations at the Bafokeng Rasimone Platinum Mine near Rustenburg. The three-year contract calls for the company to handle all opencast operations,... 

Advanced excavator

By: System Author     26th March 1999 An advanced new JCB excavator said to offer higher productivity, lower running costs and environmental benefits has been launched by Blackwood Hodge. The 45 t JS4540 becomes the new flagship for the company’s tracked-excavator range, and has reportedly got off to a good start, with the... 

Big valve order on target

By: System Author     19th March 1999 High-pressure ball-valve manufacturer RGR Technologies is in the process of manufacturing nine 150 mm class 600 ball valves and four 150 mm RGR concentric check valves for Avgold’s Target gold-mine in the Free State. The new mine is expected to produce 330 000 oz/y of gold, with 90 000 t/m... 

40 valves for gold-mine

By: System Author     19th March 1999 In a contract valued at R70 000, Macneil Steel & Valve, of Germiston, Gauteng, delivered about 40 valves to East Driefontein gold-mine in the North West Province in November last year. “The actuated diaphragm and butterfly valves will be used on the mine’s slurry-processing... 

New cryogenic valve

By: System Author     19th March 1999 Specialist manufacturer of hi-tech, high-quality ball valves, Hi-Cap Engineering, of Germiston, Gauteng, has launched a new cryogenic valve aimed at the mining industry, among others. “We believe we are the only manufacturers of this type of valve in South Africa, with all other such... 

Maintaining SA mining

By: System Author     12th March 1999 On-site maintenance and ongoing technical consultation are the key to survival in the ever-competitive mining-maintenance industry, Max Power Services marketing manager Pierre de Koker tells Mining Weekly. The company has initiated an on-site maintenance strategy to the value of almost... 

Component-maker in revamp

By: System Author     12th March 1999 Local earthmoving equipment and component remanufacturer Komatsu Rebuild Centre, of Isando, Gauteng, has celebrated its own revamp. Komatsu Reman, as it will now be known, will operate as an independent business unit under GM Taizo Shiono. The renovated centre, the only remanufacturer in the... 

Hi-tech approach to reap benefits of maintenance

By: System Author     12th March 1999 Over the last ten years the mining industry has developed significantly in terms of its scientific approach to maintenance, reports University of Pretoria maintenance engineering principal lecturer Jasper Coetzee. Although the approach is still not as scientific as Coetzee would like it to be, he... 

‘Fix-it-when-it breaks’ still prevails

By: System Author     12th March 1999 Mines have traditionally had a very centralised engineering function but, in the pursuit of improved effectiveness, many have now opted to decentralise the maintenance function into business units, explains asset management consultant Amis-SA director Roland Bergh. Bergh believes that the problem... 

Maintenance a key to profits

By: System Author     12th March 1999 Successful maintenance should be viewed as a contributor to business profits, argues SAP SA enterprise-resources planning vendor Gerhard van Niekerk. “Successful maintenance management is no longer about creating systems to maintain certain levels of plant availability.” He adds that,... 

$300m zinc development

By: System Author     5th March 1999 Development of the US$300-million Skorpion zinc project near Oranjemund in Namibia is set to continue later this year by Reunion Mining once finances for the project are secured, reports project manager Norman Green in an exclusive interview. The zinc-oxide reserve, which was discovered back in... 

Morila project shines

By: System Author     5th March 1999 With development of its US$92-million Morila project in Mali on track, Randgold Resources is starting to shine as one of the more significant gold producers in Africa, reveals MD Dr Mark Bristow in an exclusive interview with Mining Weekly. Said to be the highest-quality gold discovery in Africa... 

African gold exploration

By: System Author     5th March 1999 Despite political upheaval and social and economic instability in many African countries, international companies are still willing to take the risk to explore mining opportunities on the continent. Following the establishment of a regional office in South Africa in 1997, UK exploration company... 

Conveyors for Africa

By: System Author     5th March 1999 Two contracts, worth over R3-million for low-pressure air-supported belt conveyors or aeroconveyors to De Beers’ Orapa and Jwaneng mines in Botswana are being commissioned by Gauteng supplier Aeroconveyors, reports manager Lee Thain. The company is responsible for the design, manufacture,... 

Cobalt extraction aided

By: System Author     5th March 1999 A contract worth millions of rands for the supply and installation of a Plantscape control system by Honeywell South Africa to Kasese Cobalt in Western Uganda is reaching completion with the final phases of commissioning taking place last month, reveals sales tendering and support manager Zane... 

Zambian reclamation plan

By: System Author     5th March 1999 Gauteng mineral process plant design engineer Dowding Reynard and Associates (DRA) has, for the first time, extended its activities into cobalt reclamation in a multimillion-rand partnership venture with Kvaerner Metals. The company is completing a study which will proffer a strategy for Avmin to... 

New bauxite sampler

By: System Author     5th March 1999 Gauteng supplier Multotec Process Equipment has secured an order worth more than R3,5-million against strict competition for the supply of a new multistage sampling station for Compagnie des Bauxite de Guinea (CBG) in West Africa, Mining Weekly can today report. The Guinean bauxite producer is... 

Dual-purpose pressure hose

By: System Author     5th March 1999 Africa has traditionally used imported pulp and slurry hoses with clamp-on flanges but now industrial and mining rubber supplier Transvaal Rubber is producing dual-purpose pulp and slurry pressure hoses for use with these flanges that compete effectively in terms of quality, price and delivery... 

Outsourcing increases

By: System Author     5th March 1999 Mining houses in Africa are turning to outsourcing for professional, specialised skills and this will increase dramatically in the near future to include ‘bread-and-butter’ work, such as stoping and development, reveals Cementation Mining MD Alastair Douglas. “Outsourcing is the... 

$110m cobalt project

By: System Author     5th March 1999 Despite delays due to the unrest in the Democratic Republic of Congo, B&W Electrical is on schedule to complete its electrical contract for the process plant portion of the US$110-million Kasese cobalt project in Uganda, reports director John Barrow. To overcome delays the programme was... 

Surge in mine contracts

By: System Author     5th March 1999 South African expertise in the design and manufacture of electrical distribution and control equipment continues to make its mark in mining development projects in sub-Saharan Africa, with Reyrolle completing contracts worth more than R9-million in Ghana, Tanzania and Botswana. These contracts... 

Small-scale gold recovery plants offered

By: System Author     5th March 1999 Expansion of Bateman Process Equipment’s capital sales activities into central and northern Africa has highlighted the need for an uncomplicated, cost-effective method of gold recovery from alluvial claims for small-scale operators, reveals sales manager Simon Tuma-Waku. Realising that its... 

Planetary gearbox orders

By: System Author     26th February 1999 As part of a contract val- ued at R2,4-million, Bonfiglioli supplied four Trasmital hydraulic motors complete with planetary gearboxes to Amplats’ Potgietersrust Platinum mine in the Northern Province. The gearboxes formed part of a contract awarded to Osborn MMD for relocating the apron... 

Electric-motor repairer surges

By: System Author     26th February 1999 A 44-year-old Johannesburg electric- motor repair company – which is a long-standing provider of intensive service to the South African mining industry – has undergone rapid expansion in the past four months through the business-enhancing acquisition of two electric-motor repair... 

Heavy-duty clutch for grinding mills

By: System Author     26th February 1999 Clutches for grinding mills which are manufactured in the US and distributed in South Africa by Fawick, a division of the Fawick-Probe Corporation, are making considerable inroads in the local mining industry. “Over the last three years our sales of Eaton Airflex clutches have doubled and... 

Indian couplings curry favour in SA

By: System Author     26th February 1999 A new division of High Pressure Systems of Jet Park, Gauteng, is turning the mining industry around by offering various couplings imported from India. Rathi South Africa has been supplying couplings, which are mainly used for pumps, to the mining industry for the past 18 months. “The... 

New distributor rights

By: System Author     26th February 1999 With the restructuring of power transmission specialist Fenner Power Transmission Distribution and the new distribution rights for SKF’s ball- and roller-bearings, the company is well positioned to implement a customer-driven strategy aimed at ensuring premium branded components are... 

Equipment order commissioned

By: System Author     26th February 1999 AN order for gearboxes, geared motors and low-speed couplings has been supplied by Flender Power Transmission to Iscor for installation at its Leeupan Delmas plant on the West Rand. The equipment is to be used on conveyor drives at the plant. The order constituted about 30 units in total, with... 

New range of high-voltage motors launched

By: System Author     26th February 1999 This month sees the launch of the new F3 range of air-cooled high-voltage motors into the local market by the large-machines division of Alstom Electrical Machines. The company has arranged to provide a series of presentations on the range to groups of customers and potential customers at its... 

Portable electronic measurement system

By: System Author     26th February 1999 A new portable electronic multimeasurement system, the MMS6000, which pro- duces accurate measurements of a commutator surface, dc current (zero to 1 000 A) and temperature (–10 

Pump foundry relocates

By: System Author     19th February 1999 The growing demand for chrome iron for pumps used in the mining industry has led PD Foundries to relocate to larger premises in Ekandustria, Bronkhorstspruit, gauteng. The foundry has moved to Bronkhorstspruit where, together with specialist stainless-steel foundry, Steloy, it forms the hub of a... 

Pumping maximum use out of vanadium mine

By: System Author     19th February 1999 Deep-well submersible pumps have made it possible to develop the disused vanadium mine, Berg Aukas, as an emergency water supply scheme for the Namibian capital of Windhoek. The old mine, with an underground storage capacity of around ten-million cubic metres, is situated 20 km to the east of... 

Magnetic drive pumps

By: System Author     19th February 1999 Local pump manufacturer Brubin Engineering has introduced a pump which guarantees no corrosive, toxic, noxious or carcinogenic liquids leakages, including chemicals such as sulphuric or hydrochloric acids, caustic soda and nitric or hydrofluoric acids, which are commonplace in the mining... 

Heavy-duty pumping

By: System Author     19th February 1999 Supplied and supported in South Africa by Benmacor, the Viking series 125 pumps are available as mounted or unmounted units and their design incorporates integral thrust bearings capable of handling heavy-duty pumping without problems of end play or distortion. Most of the 14 pumps in the series... 

Pump range for mine dewatering

By: System Author     19th February 1999 The heads achievable using Kirloskar multistage pumps ensures these units are suitable for pumping applications where large changes of elevation occur and large amounts of work are required from the pumps. This means the RKB multistage pumps, which achieve heads of up to 580 m and can pump 750 m3... 

Pump and cylinder sets

By: System Author     19th February 1999 The problem of matching the right hand-pump to the right cylinder, a critical feature for optimum performance and maximum safety, has been solved with the introduction of Bellambie Mining & Industrial’s Simplex hand pump and cylinder sets with prematched pump, hose and cylinder. These... 

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