Tag Archives: Downer EDI

Downer to carry out engineering work on Queensland vanadium project

Downer has signed an agreement to provide mine engineering and technical services to Multicom Resources as the Queensland-based company looks to move forward its Saint Elmo vanadium project in the Australian state.

Downer’s mine planning, scheduling and fleet management divisions will provide key services to Multicom, with the agreement outlining the intention of progressing to a mining services agreement at Saint Elmo as well as the provision of design and engineering services. The company has also asked Downer to progress a concept study for the development of vanadium flow batteries.

“These services will support Multicom’s focus on the exploration and development of high-quality vanadium assets to satisfy the growing demand for V205 in steel manufacturing and the emerging energy storage market,” Downer said.

Once the Saint Elmo project is fully developed, Multicom has an initial target production of 10,000 t/y of V205, with the possibility of scaling up to 20,000 t/y or greater, subject to market conditions.

The company currently has a measured, indicated and inferred resource base of 493.5 Mt grading 0.28% V2O5. It is targeting first production in early 2021.

Since acquiring the tenement in early 2017, Multicom has lodged the mining lease application and is well-advanced on environmental and prefeasibility studies, Downer said.

Oz’s Carapateena underground copper-gold project on schedule

Oz Minerals’ Carapateena underground copper-gold project in South Australia remains on track, with total development at 6,285m as of the end of June, the company said.

Contractor Pybar Mining Services achieved record monthly development of 505m during May and, in accordance with Oz’s plan, transitioned over to Downer EDI for underground mining services in June with limited impact.

Carapateena is envisaged as a 4.25 million tonne per annum underground operation costing some A$916 million to build and producing 65,000 tonnes of copper and 67,000 ounces of gold per year over a 20-year mine life.

The deposit, which is shaped like a near vertical pipe and sits under some 500 m of unmineralised rock cover, will be mined using sub-level caving. The deposit will be blasted in 25-m sections with ore collected by loaders before being crushed and loaded onto a conveyer belt to surface.

Oz is now in phase two of construction with commissioning expected by the end of 2019.

In the company’s quarterly production results, it said underground development works, which were at 435m vertical depth at the end of June, would be expanded to include access development for future underground crusher installations in the current three-month period.

The first raisebore hole commenced in the June quarter (see photo) in preparation for installing and commissioning the first ventilation raise in the September quarter.

Site earthworks for the processing plant are now underway, with engineering progress exceeding 70%.