Tag Archives: Cementation USA

Wood to sell Terra Nova Technologies to Cementation Americas

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Wood has agreed the sale of its Terra Nova Technologies business to Cementation Americas, a business owned by Murray & Roberts Holdings.

The sale of the conveying and material handling systems solutions business is expected to bring in cash proceeds of $38 million, Wood said, with closing expected in the June quarter.

David Kemp, Wood Chief Financial Officer, said: “Terra Nova Technologies has a strong track record in delivering material handling equipment to our customers. Wood’s strategy going forward is to focus on asset-light solutions rather than the manufacture/fabrication of equipment.

“The disposal makes a good contribution to our non-core asset disposal programme which is a key element of our deleveraging plan.”

Terra Nova Technologies has complete design/supply and engineering procurement and construction capabilities. Its systems are custom engineered for the mining and mineral processing, iron, coal, aggregate, phosphate and cement industries.

Its renowned mobile stacking systems, including the patented Super Portable® systems, are used worldwide for copper, gold and uranium heap leaching operations as well as dry tailings stacking.

In a later release, Cementation Americas said TNT has earned a solid reputation for providing quality design, supply and commissioning services for crushing and screening plants, overland conveyors, heap leach systems and mobile stacking systems for waste and dry tailings.

Justin Oleson, President of Cementation Americas, said: “The purchase of TNT fits well within Cementation’s strategy to improve our ability to serve clients, both geographically and across the mining value chain. The combining of Cementation and TNT complements both our underground and surface design/build portfolios, and better positions Cementation to support our client’s total mining needs.”

Regarding the acquisition, Ron Kelly, President of TNT, said: “The combination of TNT and Cementation is an excellent fit strategically. We share several key customers, and together, we can provide these customers with enhanced value through a single source for products and services. There is also significant potential for TNT and Cementation to grow, expanding into new common markets.”

Resolution copper mine looking to automation, Rio says

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The partners at the Resolution copper project in Arizona, US, are likely to look to automation to solve the problems that come with operating at depths up to 2,100 m and temperatures in excess of 70°C, according to a member of Rio Tinto’s Growth & Innovation team.

Rob Atkinson, Head of Productivity & Technical Support for Rio’s G&I team, said operating at such a depth meant it really had to be “a fully autonomous mine”.

Resolution is a joint venture between Rio and BHP, with the former owning 55% and the latter 45%.

The proposed block cave hosts one of the largest undeveloped copper deposits in North America, with a 1.79 Mt resource grading 1.54% Cu. When up and running, it is expected to operate at a rate of around 120,000 t/d, producing some 1,000 MIb/y (453,592 t/y) of the red metal. This would make it one of the biggest copper mines on the continent.

But, to get to this orebody, one of the deepest single-lift shafts in the US had to be sunk at No 10 shaft (7,000 ft or 2.1 km).

While sinking this, Cementation USA came across huge inflows of water and rock temperatures of up to 80°C, making excavation particularly tricky.

This is why haulage in the mine is likely to be carried out by autonomous equipment. According to a 2017 interview with then Vice President of Operational and Technical Support for Rio Tinto’s Copper & Diamonds business, Craig Stegman, autonomous LHDs could also potentially feed an autonomous ore handling system at the underground mine.

And, in addition to this, there is also the possibility of using battery-powered LHDs at the operation.

Stegman, at the time, said Rio was working with suppliers such as Caterpillar, Sandvik and Komatsu to create an alternative to vehicles that were tethered to an electrical connection.

The deposit, located 96 km east of Phoenix, near the town of Superior, is still some way off being exploited.

The Resolution Copper joint venture (55% Rio Tinto, 45% BHP) confirmed back in June that rehabilitation work at its No 9 Shaft was on track for completion in 2019. This shaft would then have to be deepened and connected to No 10 Shaft in 2021.

While the mine is likely to be autonomous, the operation is expected to employ some 1,400 direct employees as well as a further 2,300 contractors and other support roles, according to Rio.