CMI Gold & Silver Inc. is one of the oldest gold and silver dealers in the United States and has played a major role in introducing investors to the gold and silver markets. http://www.cmi-gold-silver.com/
Please note that this article has errored by including “Dawson City, Yukon, Canada” (Klondike Gold Rush) on the list. The Klondike’s short-lived, decade-long goldrush only produced 12.5 million ounces of the precious metal. By comparison, the Porcupine Camp (Timmins, Ontario), discovered in 1909 and still in production, has produced 72-million ounces, once again booming Kirkland Lake, originally discovered in 1911, has produced 38-million ounces to date and Red Lake, originally found in 1925, has produced 26-million ounces up to 2006, and is currently experiencing another boom. Link here for: Battle of the Canadian Gold Rushes: Klondike Versus Northern Ontario. – Stan Sudol/RepublicofMining.com
The World’s 10 Most Prolific Gold Fields
Gold has long been one of mankind’s most prized possessions. Yet most people have little idea where gold comes from, other than from “gold mines.”
Mining gold today often becomes monumental undertakings, truly some of man’s greatest engineering feats. Imagine gold mining shafts nearly two and a half miles below the surface and it taking two hours for miners to get to their work stations. Imagine a pit so large that it can be seen from outer space.
No reason to imagine, those are the realities in the mining of gold revealed in “The World’s 10 Most Prolific Gold Fields.”
1. Witwatersrand Basin (Johannesburg, South Africa)
The head frame of the Tau Tona Mine is the lone entrance to over 500 miles of tunnels.
Located in South Africa, the Witwatersrand Basin represents the richest gold field ever discovered. It is estimated the 40% of all of the gold ever mined has come out of the Basin. In 1970, South Africa’s output accounted for 79% of the world’s gold production. By 2009, South Africa’s share of world gold production had dropped to less than 8%.
Mining in the Witwatersrand Basin is accomplished by creating deep underground tunnels that are necessary to reach the plentiful reserves. The Tau Tona Mine features the deepest tunnel in the world extending a full 2.4 miles below the earth’s surface. A massive ventilation and air conditioning system is required to overcome the extreme working conditions throughout the over 500 miles of tunnels. At its deepest levels, the air temperature reaches 131 F and the rock face itself 140 F. The mine is so extensive that it takes workers a full two hours to travel from the surface to the deepest sections of the mine where they must then contend with pockets of lethal gas, water and a continual barrage of small earthquakes.