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Mining Services News

Gamsberg’s low grade a real impediment

By: System Author     25th June 1999 The international trend in the zinc market towards the development of mines with higher grades could put pressure on the proposed R4-billion project at Gamsberg in the Northern Cape, which is a large low-grade orebody. Last year, Anglo American announced that it would pursue a study of the... 

Promising adjoining areas

By: System Author     25th June 1999 What is referred to as Target is really only Target south. This, on its own, is destined for at least 15 years of life. But adjoining are areas of potential future expansion, embracing Target north, and Sun south, each already showing signs of significant potential. Target south embraces the... 

Loraine could have been highly profitable

By: System Author     25th June 1999 HAD Loraine gold-mine been mined as Target will be mined, it would have been highly profitable. Records show that for seven years of its life, while mining the Weltevreden fan, Loraine mined at a recovered grade of 11 g/t-plus. “It was an excellent orebody and equivalent to that at... 

Info providing cost headstart

By: System Author     25th June 1999 Accuracy of information is giving Target gold-mine a major cost headstart. Drilling and years of mining at adjoining Loraine is minimising risk. The main drilling programme finding is that the extensive shallower Eldorado formation containing Elsburg and Dreyerskuil reefs continues north from... 

Impressive 4,9 m face advance

By: System Author     25th June 1999 A combination of new technologies has helped Target gold-mine to achieve impressive face advance. AECI Explosives Limited (AEL) underground bulk systems technology (UBST) acting business manager Mike Pledger tells Mining Weekly that a combination of computerised drill-rigs able to drill... 

19 additional exploration holes to be drilled

By: System Author     25th June 1999 THE underground drilling of 19 additional exploration holes at Target begins this month. The R1,9-million six-month contract to drill the 60 mm diameter holes has been won by Cementation Mining, of Johannesburg, whose R50-million 32-hole surface-drilling contract at Target is nearing completion,... 

Are coal’s ‘farm fences’ destined to come down?

By: System Author     18th June 1999 It happened in the gold industry when the restrictive ‘farm fences’, which had kept South African gold-mines penned into geologically-irrelevant lease areas, were taken down. Now it looks set to happen in the coal business, as South African coal companies move to boost efficiencies in... 

Tearing away at the enigmatic face of mineralisation in SA

By: System Author     18th June 1999 A project to develop a computer modelling system for orebody formation is yield- ing results beyond expectation, and these are tearing away at the enigmatic face of mineralisation. These discoveries are being made at Rhodes University, where the project is headed by Professor Alan Rice, a... 

Flotation circuit backbone

By: System Author     18th June 1999 The backbone of the world-first, newly-commissioned R1,5-million portable pilot flotation plant commissioned at Lonmin’s Karee platinum mine in March is Mintek’s Floatstar flotation circuit stabilisation system. “The mine has been Mintek’s development site for a long time,... 

Process pumps for mining

By: System Author     11th June 1999 Local pump specialist Ahl- strom Pumps has been offering pumping solu- tions to the metallurgical industry for the refining of steel and non-ferrous metals, such as copper, zinc and nickel, with much success for over a year now. The company previously only developed and manufactured pumps and... 

The great gold coin debate

By: System Author     28th May 1999 The gold-cast face of human rights worldwide, that of President Nelson Mandela, could lead to a head-to-head battle with South Africa’s other prestigious gold coin product, the Krugerrand. Mining Weekly engaged in an investigation to find out exactly how a potential... 

R1,5m facility for mineral research

By: System Author     28th May 1999 brand-new R1,5-million mineral- beneficiation research facility has been completed by thermal-process engineer Thermopower Furnaces at its Olifantsfontein, Gauteng, manufacturing plant. Construction on the building began in January this year after it was decided to designate separate facilities... 

Facing the future

By: System Author     21st May 1999 The range of trackless mining equipment from Boart Longyear provides the industry with rigs, booms and drills that can contribute to increased face advance by operating faster and more efficiently and safely, replacing manual systems, says capital equipment director Bob du Toit. “The rate... 

Unsuitable geology restricts method

By: System Author     21st May 1999 The longwall mining method is no longer as popular in South African coal-mines due to its unsuitability to local geology. It is being replaced with continuous miners and roadheaders because of their greater flexibility and lower cost, Fermel Hydraulic & Engineering MD Savi Iovino tells Mining... 

Productivity boosted by longwall mining

By: System Author     21st May 1999 The longwall mining method boasts results such as productivity increases and higher extraction rates, reports the Chamber of Mines. Together with shortwall mining, a variation of longwall mining originating in the US, these are being used by some South African mines. In longwall mining, two... 

New era for SA gold-mining now on target

By: System Author     21st May 1999 Unconventional philosophies to be implemented at Avgold’s new Target mine in the Witwatersrand basin herald the beginning of a new era in gold-mining in South Africa. Based on the foundations of mechanisation, information and modern organisational design, the operation is expected to yield... 

Base-metals bioleach commercialisation

By: System Author     14th May 1999 A memorandum of understanding to commercialise base-metal bioleach technology has been executed by BacTech Metallurgical Solutions (BacTech) and Mintek with Industrias Pe 

‘Big’ small contractor

By: System Author     14th May 1999 Durban-based civil engineering, drilling and blasting company Eire Contractors is reported to be the biggest of the smaller-volume customers of Sasol Mining Explosives (SMX), states MD John Moffatt. The company is blasting 300 t of SMX explosives a month and, although not being able to compete... 

Explosives group is bang on target

By: System Author     14th May 1999 The drive by the Sasol group of companies towards the goal of becoming a leader in the global explosives market is spearheaded by a market-focused commitment to product and service innovation, states Sasol Mining Explosives’ (SMX) MD Dewet Deetlefs. A manufacturer and marketer of commercial... 

New detonators a hit

By: System Author     14th May 1999 The introduction of electronic detonators into the existing detonator market can only enhance operating productivity for mines, reports Ensign-Bickford South Africa (Ebsa) MD Ray Gibbison. He explains that, although the company controls most of the surface detonator market, low-technology... 

Hi-tech advances a blast

By: System Author     14th May 1999 The release of Sasol Mining Explosives’ (SMX) new electronic detonator in mid-1998 by Sasol Mining Initiators (SMI) – the developer, manufacturer and international marketer of the product – was brought forward because the company is committed to a phased, though far-reaching... 

Ekati Project Canada

By: System Author     14th May 1999 Name: Ekati Project Location: The mine is located in a remote tundra region near Lac de Gras in the Northwest Territories (NWT), about 200 km south of the Arctic Circle. Brief description The mine is situated on a 853 000-acre claim block (which includes 8 000 lakes) and is Canada’s first... 

Portable pilot flotation plant

By: System Author     7th May 1999 The adage ‘dynamite comes in small packages’ is ringing true at Lonrho’s Karee platinum mine near Rustenberg, in the North West Province, where a R1,5-million portable pilot flotation plant is being commissioned. The pilot plant, known as a flotability characterisation test rig... 

World to SA: Catch up!

By: System Author     7th May 1999 Official explosion-protection and flameproofing training for South African engineers and technicians appears to be sparse, and compares poorly internationally, says South African Flameproof Association (Safa) chairperson Ken Bryant. He points out that a generalised approach to education is... 

Haulers for coal mine

By: System Author     7th May 1999 Diesel-engine flameproof specialist Explosion Protected Equipment (EPE) of Wynberg, Gauteng, has supplied three dry-system flameproofed underground-hauler engines to Ingwe Coal’s Khutala mine in Mpumalanga. EPE is the sole South African distributor of the Pyroban Minepower Dry System, which... 

Retrofit system is no damp squib

By: System Author     7th May 1999 Diesel-flameproofing equipment specialist Elgin Flameproof of Kempton Park, Gauteng, has developed and is manufacturing a dry flameproof system with retrofit capabilities on to commonly-used wet scrubbing systems, reportedly making it considerably cheaper than the imported dry flameproof systems... 

Hazardous-area spec defined

By: System Author     7th May 1999 Engineering-inspection company SGS of Olifantsfontein, Johannesburg, is collaborating with the South African Bureau of Standards (SABS) to write a specification for a more economical diesel vehicle for underground use outside Zone 1 hazardous areas of mines where there is a possibility of methane... 

New process to manage explosions

By: System Author     7th May 1999 A new explosion-management process has been developed by CSIR Mining Technology in response to the prevail- ing problem of human error creeping into risk-management practices. “There are very few processes that incorporate the human role or the management role into the risk-assessment and... 

R13m Ugandan contract

By: System Author     7th May 1999 Industrial electrical contractor B&W Electrical of Alberton, Gauteng, is completing a R13-million electrical contract for a process plant in Uganda in line with stringent flameproof standards. MD John Barrow explains that a section of the plant is a classified area, and therefore has to comply... 

Mining equipment supplier opens first Southern African training centre

By: System Author     30th April 1999 Local supplier of Caterpillar mining equipment Barlows, in Isando, Gauteng, has opened the doors to the first regional training centre certified by Caterpillar Overseas Southern Africa (Cosa). Speaking at the opening of the new facility this month, Cosa MD Ben Darrow said that the company had,... 

Musselwhite Thunder Bay, Ontario

By: System Author     30th April 1999 Name: Musselwhite Location: 500 km north of Thunder Bay, north-western Ontario, Canada Brief description: Musselwhite is a $190-million fast-track open-pit and underground gold-mine as well as a new 3 300 t/day plant. Products: Gold Geology: The mine’s gold-bearing zones are centred within... 

Put up or close, Maduna warns small-scale miners

By: System Author     30th April 1999 South Africa’s thousands of small-time, illegal miners will be forced into legality over the next few years or face losing the source of their livelihoods. Speaking at the launch of the National Small-Scale Mining Development Framework, Minerals and Energy Minister Dr Penuell Maduna said... 

The Kroondal XV: tiny team, tall task

By: System Author     23rd April 1999 Never in the field of South African mining has so much been contracted out by so few to so many. The 45% Australian-owned Johannesburg Stock Exchange-listed Kroondal Platinum Mines (KPM) employs a ‘tiny team’ of 15 staff – hence Mining Weekly’s Kroondal XV rugby metaphor.... 

South Africa’s purple gold

By: System Author     23rd April 1999 In what is believed to be a world first, purple-coloured gold has been faceted for use in jewellery for the local and export market by research and development organisation Mintek. The purple gold, which is an intermetallic compound of gold and aluminium, has been known to chemists and... 

SA know-how put to test

By: System Author     23rd April 1999 The metallurgical test-work – on which the Australian-initiated Kroondal Platinum Mines plant design is based – was carried out by the State-owned South African minerals-technology organisation Mintek, of Randburg, which has extensive platinum-processing experience. Measurements,... 

19% of capex spent so far

By: System Author     23rd April 1999 Some R60-million has been expended so far on the Kroondal Platinum Mines (KPM) project, representing just over 19% of the R311-million budgeted to do the complete job, financial manager Graham Ferreira tells Mining Weekly. In addition to the R60-million already paid out, a total of R160-million... 

Instantly-paying mine

By: System Author     23rd April 1999 A major economic advantage of the new Kroondal platinum operation is that all mining is on reef, both in the open pit and underground, Mining Weekly can today report. This means that there is no need for the construction of costly underground infrastructure to access platinum-bearing ore. The... 

A crushing victory

By: System Author     23rd April 1999 Twelve-million rands worth of crushing, screening and milling equipment has been sourced from one company for Kroondal. Successful bidder Nordberg, of Johannesburg, which is supplying a jaw crusher, cone crusher, vibrating screens and the rod mill for the metallurgical plant, says, however, that... 

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