A summary of the hostory of the Thames / Hauraki goldfield, and general gold mining history in New Zealand. Historic photographs of Thames goldmining township, the Shotover and Caledonian Mine, Brian Boru hotel, Taipari's house, and Hauraki Mission Station.
A recently opened underground section uses deeper level extraction methods. In Stillwater, Montana, pgm is extracted from the J-M Reef. 80% of their platinum and palladium-rich ore is mined using a mechanized ramp and fill method, much like the LHD method in South Africa.
Feature The real cost of mining gold Since the bull market for gold began in 2003, the world's major gold mining companies have produced tens of millions of ounces of gold and have raised (and written-off) many billions of dollars for capital expenditures and acquisitions.
Underground hard rock mining refers to various underground mining techniques used to excavate hard minerals, usually those containing metals such as ore containing gold, silver, iron, copper, zinc, nickel, tin and lead, but also involves using the same techniques for excavating ores of gems such as diamonds or rubies.