3 Technologies in Exploration, Mining, and Processing .
As analytical equipment is miniaturized, inexpensive hand held devices that could be used in the field or in mines to provide real time analytical results would significantly benefit both In hard rock mines carefully planned drilling into the ore and blasting with dynamite or ammonium nitrate explosives are common.
Gold mining Wikipedia
Barrick Gold Corporation has one of the largest open pit gold mines in North America located on its Goldstrike mine property in north eastern Nevada. Other gold mines use underground mining, where the ore is extracted through tunnels or shafts. South Africa has the world's deepest hard rock gold mine up to 3,900 metres.Get Price