RE: That18 Apr 2020 11:58
Corradus - do not think we should be using current Telfer AISC - Telfer AISC has increased due to low grade feed, and is reported annually and impacted by things like maint shutdowns. I beleive part of the feasibility study will be to calculate a new AISC over the future life of the mine once the know Hav MRE and grades.
From memory - Cadia AISC is very low - think it was under $200. It's in the last annual report.
From Wikipedia
Telfer production was suspended in 2000 due to high operating costs when they were only doing open cut mining.
In 2002, Newcrest Mining announced a new redevelopment project worth $1 billion, after discovering new mineral areas and a reserve base of some 19 million troy ounces of gold and 640,000 tonnes (710,000 short tons) of copper. The redevelopment expanded underground mining areas, deepened open pits, constructed a processing plant and power station, and built a new gas supply line from Port Hedland.
The Telfer mine is not connected to the Western Australian power grid but instead produces its own power from natural gas via a 450 km purpose built pipeline. The power station on site is able to produce 138 MW of power. The focus changed from open pit mining to underground mining, and Telfer became one of Australia's largest gold mines, second only to Kalgoorlie's Super Pit.
The mine reopened in November 2004, after commissioning of the processing plant and, initially as an open cut mine, from March 2006 also with an underground operation.
In January 2008, Newcrest Mining lowered the mine's annual gold output targets. Newcrest said, "At Telfer, mechanical availability of the open pit mining fleet and the processing of harder ores are impacting the expected production profile for the full year.
As of 2016, the forecast mine life for Telfer is 2021 for the underground operations and 2018 for the open pit operations. Mining is carried out at the Main Dome open pit and the underground operations below. The West Dome pit is being mined again.
I think the Wikipedia entries show why Newcrest are in such a hurry to develop Hav.