Re: #Official Mining Thread
Posted: Fri Oct 01, 2010 7:41 am
Olympic Dam output set to rival Pilbara's
Matt Chambers
The Australian October 01, 2010 12:00AM
BHP Billiton says its huge planned Olympic Dam open-pit mine in South Australia could produce more than 1.3 million tonnes a year of copper.
This would rival both the scale of Western Australia's Pilbara iron ore region and production from Escondida, the world's biggest copper mine.
The big miner has also revealed plans to pump billions of dollars into growing its plant at Escondida, in Chile, in multiple stages to keep expanded production beyond 2015 at least steady at 1.3 million tonnes a year as grades there decline.
This week, BHP took analysts on a tour of its South American copper operations and briefed them on growth options there and at Olympic Dam.
While the resulting analysts' reports gave a contradictory picture of BHP's copper expansion plans, the miner has chosen to keep quiet on what was said, instead releasing just the slides from the presentations.
In the slides, BHP's non-ferrous boss, Andrew Mackenzie, produced a graph showing the planned Olympic Dam open pit plateauing at just under 1.4 million tonnes of annual copper production over its 50-year life.
BHP's environmental impact statement lodged last year says the pit will reach 750,000 tonnes a year of copper production after a decade from the go ahead (expected in 2012).
This fits in with the graph, but after this the plan is to increase annual copper production to 1 million tonnes after about 20 years and on to 1.3 million tonnes after 30 years.
"Additional resource availability means that the ultimate scale of the Olympic Dam operation could rival the Pilbara," Mr Mackenzie said.
Analysts have interpreted the presentation differently.
Some reports say the phased Olympic Dam expansion has been scaled back and others that it has been brought forward.
One analyst said he had not issued a report because he believed the phased expansion had not changed from the one BHP had previously spoken of.
Growth plans for Escondida are also unclear, based on the analysts' reports.
BHP's slides show new plans for three or more expansions of concentrator capacity at the huge mine beyond 2015.
But there was no mention of expected copper production.
Analysts briefed said the company had indicated each expansion would cost $US3 billion ($3.1bn) to $US4bn. While UBS saw the expansion as an indication of a "step-change" in production, Goldman Sachs saw production gains as limited as the expanded plant capacity was to treat lower-grade ore.