Gold Mining

Gold Mining

Gold Mining is the removal of gold from the ground. There are several techniques and processes by the which gold may be extracted from the earth.

History on Gold Mining

It is impossible to know the exact date that humans first began to mine gold, but some of the oldest known gold artifacts were found the Varna Necropolis in Bulgaria. The graves of the necropolis were built between 4700 and 4200 NC, indicating that gold mining could be at least 7000 year old.
Gold objects  are plentiful in the Bronze age, especially in Ireland and Spain, and there are several well known possible sources.
Romans used hydraulic mining methods, such as hushing and ground sluicing on a large scale to extract gold from extensive alluvial deposits, such as those at Las Medulas. Mining was under the control of the state but the mines may have been leased to civilian contractors some time later. The gold served as the primary medium of exchange within the empire, and was an important motive in the Roman invasion o f Britain by Claudius in the first century A.D., although there is only one known Roman gold Mine at Dolaucothi in west Wales. Gold was a prime motivation for the campaign in Dacia when the Romans invaded Transylvania in what is now modern Romania in the second century A.D. The legions were led by the emperor Trajan, and their exploits are shown on Trajan's Column in Rome and the several reproduction of the column elsewhere such as the Victoria and Albert Museum in London.

Under the Eastern Roman Empire Emperor Justinian's rule, gold was mined in the Balkans, Anatolia, Armenia, Egypt, and Nubia. Gold was first mined in the area of the Kolar Gold Fields in Bangarpet Taluk of Kolar District of Karnataka state, India, prior to the 2nd and 3rd century A.D., by digging small pits. During the Chola period in the 9th and 10th century A.D, the scale of the operation grew.
The tradition of mining gold started at least as early as the first millennium B.C. The Champion reef at the Kolar Gold field was mined to a depth of 50 meters during the Gupta period in the fifth century A.D. The metal continued to be mined by the eleventh century kings of South India, the Vijayanagara Empire from 1336 to 1560, and later by Tipu Sultan, the King of Mysore state and the British. It is estimate that the total gold production in Karnataka to date is 1000 tons.
Mining of the Slovak deposit primarily aroung Kremnica were the last largest of the Medieval period in Europe. The discovery of gold  in the Wiiwatersrand led to the Second Boer War and ultimately the founding of South Africa.
The Carlin Trend of Neyada U.S. was discovered in 1961. Official  estimates indicate that total world gold production  since the beginning of civilization has been 4,970,000,000 troy ounces and total Nevada production is three percent of that, which ranks Nevada as one of the Earth's Primary Gold Producing regions.