The Goldstrike Complex is located on the Carlin Trend, the most prolific gold mining district in the Western Hemisphere, about 60 kilometers northwest of Elko, Nevada. The Goldstrike operation includes the Betze-Post open pit mine and the Meikle and Rodeo underground mines which are located just north of the Betze-Post pit, along the same mineralized trend.
The Betze-Post pit is a truck-and-shovel operation using large electric shovels. Meikle is a high-grade ore body which is mined by transverse longhole stoping, underhand drift and fill mining methods. Rodeo is a further extension of the mineralization found at Goldstrike and is a trackless operation, using two different underground mining methods: long-hole open stoping and drift-and-fill.
The Goldstrike Property consists of two processing facilities: (1) an autoclave circuit, which is used to treat the property’s non-carbonaceous sulfide (refractory) ore; and (2) the roaster, used for treating carbonaceous ore (not suitable for autoclaving). These facilities treat ores from both the surface and underground operations.
In the first nine months of 2013, the Goldstrike Property produced 650,000 ounces of gold at all-in sustaining costs of $955 per ounce1. Goldstrike’s proven and probable mineral reserves as at December 31, 2012, were 12.3 million ounces of gold2.
Modifications to Goldstrike Autoclave Circuit (PDF)
The autoclave facility is undergoing modifications to enable about 4.0 million ounces to be brought forward in the mine plan. The project is expected to enter production in Q4 2014, with an average annual contribution of about 350,000-450,000 ounces over the first five full years.