Diamonds & Gemstones

Diamond and Gemstones includes, diamonds, gemstones, coloured gemstones, ruby, emerald, sapphire and zircon. Diamonds includes diamond mining, diamond processing, kimberlite, alluvial diamond mining, cutting and polishing, beneficiation, diamond sorting, x-ray sorting, laboratory grown diamonds, lab grown diamonds, synthetic diamonds, diamond exploration, blockchain, Kimberley Process, diamond fingerprinting, diamond tailings, rough diamonds, blood diamonds, diamond tender.

MANUFACTURING FIBRE FOR ROOF SUPPORT CONCRETE

Unlike in conventional construction where the stresses can be predicted and the steel placed accordingly, the fibres are spread throughout the shotcrete underground roof support mix. This provides a support system for a situation where one cannot predict at which exact point it will be most required.

The fibres reinforcing the shotcrete provide an energy absorbing capacity as they give ductility to the shotcrete, allowing cracks to form and the shotcrete to deflect, providing a kind of ‘crumple-zone’. The energy absorption buys time and retains support essential for a stressed area to be evacuated if necessary, and mines base their specification calculations on how much work the fibre in the shotcrete does after a crack forms. The fibre-reinforced shotcrete can be applied in a single step, which is another advantage of this system.

PIONEERING THE MODULAR PLANT CONCEPT IN ANGOLA

With its experience designing processing plants for a range of commodities in Africa, Bateman pioneered the introduction of the modular plant concept for diamond processing into Angola in the 1980s.The concept proved to be particularly suitable to the country's remote mining locations as the plants are modular, pre-tested at the factory and delivered to site in a 'knock-down' format.
modular plant angola
The modular 120 t/h diamond-recovery
plant at Yetwene in Angola, complete
with a 50 t/h DMS module and its
containerised X-ray module in the
left foreground.

The first installations in the 1980s included dense-media separation (DMS) and X-ray recovery modules for Intraco, as well as a 120 t/h diamond treatment plant, with a 50 t/h DMS and recovery plant for Gangau, and various modular DMS units, ranging in size from 20 to 40 t/h, supplied via Mercantex, all associated with ITM Mining.

PIONEERING THE MODULAR PLANT CONCEPT IN ANGOLA

With its experience designing processing plants for a range of commodities in Africa, Bateman pioneered the introduction of the modular plant concept for diamond processing into Angola in the 1980s.The concept proved to be particularly suitable to the country's remote mining locations as the plants are modular, pre-tested at the factory and delivered to site in a 'knock-down' format.
modular plant angola
The modular 120 t/h diamond-recovery
plant at Yetwene in Angola, complete
with a 50 t/h DMS module and its
containerised X-ray module in the
left foreground.

The first installations in the 1980s included dense-media separation (DMS) and X-ray recovery modules for Intraco, as well as a 120 t/h diamond treatment plant, with a 50 t/h DMS and recovery plant for Gangau, and various modular DMS units, ranging in size from 20 to 40 t/h, supplied via Mercantex, all associated with ITM Mining.

STEEL GRATING, STAIRTREADS, PRESSED FLOORS, HANDRAILING, EXPANDED METALS

Vital Engineering (Pty) Ltd is pleased to support Chavda & Associates with the supply of products to the Angolan diamond mines. With international experience and the high ISO 9001 accreditation, Vital is confident that its customers will be satisfied with its quality products.

Vitagrid® is fast becoming widely acclaimed for innovative and high quality safety serrated grating, handrail and expanded metal products and standards ensuring reduced costs and low maintenance cycle replacements. Various finishes are available and the new Vitaglass® corrosion resistant coating offers even better product life in the most demanding of conditions with no loss of walking surface grip.

STEEL GRATING, STAIRTREADS, PRESSED FLOORS, HANDRAILING, EXPANDED METALS

Vital Engineering (Pty) Ltd is pleased to support Chavda & Associates with the supply of products to the Angolan diamond mines. With international experience and the high ISO 9001 accreditation, Vital is confident that its customers will be satisfied with its quality products.

Vitagrid® is fast becoming widely acclaimed for innovative and high quality safety serrated grating, handrail and expanded metal products and standards ensuring reduced costs and low maintenance cycle replacements. Various finishes are available and the new Vitaglass® corrosion resistant coating offers even better product life in the most demanding of conditions with no loss of walking surface grip.

CHAVDA APPOINTED DISTRIBUTOR OF REMA TIP TOP PRODUCTS FOR ANGOLA

Nenana Management Services is the holding company for Rema Tip Top South Africa. Rema Tip Top South Africa specialises in optimising the versatile properties of rubber, teflon, ceramics, polyurethane and polyethylene. Rema Tip Top has been involved in the supply of rubber products to various industries world wide. Currently 25% of exports to sub-Saharan Africa are to the diamond mining industry.

WHO IS MAHAVEER CHAVDA?

As a child I remember walking home one day and finding all our furniture in the street. Our family was removed from Maitland to Elsies River because of the Group Areas Act. We were moved to Cravenby, but after a while we couldn’t afford the rent … and you know what this means.

I attended Holy Trinity Primary School in Elsies River and then Livingstone High in Claremont.

WHO IS MAHAVEER CHAVDA?

As a child I remember walking home one day and finding all our furniture in the street. Our family was removed from Maitland to Elsies River because of the Group Areas Act. We were moved to Cravenby, but after a while we couldn’t afford the rent … and you know what this means.

I attended Holy Trinity Primary School in Elsies River and then Livingstone High in Claremont.

ENDIAMA’S DEAL WITH SOUTH AFRICAN LOGISTICS GROUP

Enditrade is a 100% owned subsidiary of Endiama, while Chavda & Associates is a procurement, logistics and support company with long experience in the mining sector. Chavda & Associates, headed by Mahaveer Chavda, also has an extensive and impressive track record in dealing with Angola’s infrastructural challenges.

Endiama is a shareholder in all of Angola’s diamond mines, and the rationale behind the partnership deal between Chavda and Enditrade is to ensure lower costs at these mines through efficient management of the logistics chain.

DE BEERS STAYS AHEAD IN EXPLORATION GAME

Canada has been a focus point for the group’s exploration in recent years, with it having accounted for up to 40% of the total exploration budget. In 2006 this will fall to about 10%. Outside Africa De Beers’ greatest focus areas for exploration in 2006 will be India, accounting for some 8%, and Russia, accounting for 2% of the group’s exploration budget. De Beers group exploration manager, Bill McKechnie, says that with De Beers only just entering Russia in terms of exploration that is still seen as in a start up stage.

“About 65% of our 2006 exploration budget will be spent in southern and central Africa,” McKechnie says.

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