Newmont Boddington Gold mine, commenced plant start-up in July 2009. Over 14,000 employees and contractors worked more than 14 million man hours to start up the project the gold mine in the Boddington At year end 2010 the mine had reserves of 20 million ounces of gold and 2.4 billion pounds of copper. At full production Boddington would be Australia’s largest gold producer.
Mining And Production At Boddington Gold Mine
The mining operation at Boddington Gold Mine consists of two large open pits. 100mtpa average ex-pit mining rate. 1:1 ore / waste stripping ratio. As of May 2012, Newmont was seeeking to expnd the mine life to 2052 by combining the north and south Wandoo open pits. The waste rock facility is to be expanded as well to 2 billion metric tons. Mining production at Boddington gold mine commenced in 2009 under the management of the Boddington Gold Mine Management Company, a 100% Newmont-owned company. Average attributable gold production in the first five years will be 1,000,000oz a year, while on an average life-of-mine basis, attributable production is estimated to be between 250,000oz and 270,000oz a year. Copper production, which is being sold as concentrate, is expected to be around 30,000t a year. In 2009, approximately 103,300oz of gold and 9.0 million pounds of copper were sold from Boddington. The mine produced 741,000oz of gold and
69 million pounds (mlbs) of copper in 2011.
Processing At Boddington Gold Mine
Very tough hard rock is subjected to three stage crushing plus single stage grinding: coarse crushing, fine crushing and screening at process plant, and milling. The ground ore is conveyed to the treatment plant via a conveyor. At the treatment plant, the ore is crushed further and ground finely to slurry with Ball Mill . The ore is initially processed by flotation, which produces copper / gold concentrate with about 18% copper. Fine liberated gold is recovered by processing flotation concentrates through a gravity circuit before it is de-watered and stored. It is then ship-loaded for delivery to the smelters. The residual gold content found in the flotation tailings is recovered through carbon-in-leach circuit. The processing equipment used at the mine includes two 60X113 primary crushers, five MP 1000 secondary crushers, four high pressure grinding rolls and four ball mills. The wastewater treatment plant at the mine currently provides up to 0.5 mega litres each day.