The ten figure reveals the world's top second gold mines: buried in the underground 3000 meters of the most valuable wealth2017-04-21 19:16:38 135 ℃
Original title: Ten secret map of the world's top second gold mines: buried in the underground 3000 meters of the most valuable wealth
Gold South Deep has the world's second gold reserves. But for South Deep, mining has never been easier. The gold mine is located west of Johannesburg. It takes an hour's drive. South Deep has 63 million ounces of gold, is formed by the crystallization of ancient lakes. Every day the miners had to be underground more than 3000 meters, equivalent to 5 times the Shanghai Center Tower, about 1\/3 of Mount Qomolangma elevation. Gold Fields Co., Ltd. has spent huge sums of money for the mine, equivalent to about $2 billion 500 million. Gold Fields has been involved in fatal accidents and changes in mining methods. Now, with the implementation of the new mining plan and cost control properly, South Deep gold mine will be fully mined within 5 years, the next 70 years will significantly increase the supply of gold. When there is no sharp increase in demand for gold, gold prices can be expected to fall below $1000 \/ oz.
Rocky Wyngaard in the South Deep gold mine tunnel drill holes, to prevent falling rocks for fixed wire. The hole in the rock surface is filled with explosives, crushed the ore into rubble, and then transported to the ground through a dump truck, chute, and lift.
Liquid gold is poured into the casting mold from the furnace, casting the most original gold bars, the annual melting amount of 500 thousand ounces of gold.
These rough gold bars were shipped to Johannes's eastern Refinery (Rand), with a purity of only 85%. Rand gold will be processed to meet the London gold market standard 99.99% of the standard gold bars.
The company set up a dedicated workshop 2.6 kilometers underground, stacking heavy machinery parts. Covers an area of about 11500 square meters.
The workers are risking their lives in the face of the earth. There are already 23 people were killed in the Gold Fields gold mine accident, only in 2008 the elevator cable failure caused by the death of 9 people.
A gold bar worth $1 million 150 thousand, security is the top priority.
Gold Fields expects to maintain South Deep operations from 2022 to $900 per ounce mining costs, well below the current level of nearly $1300.
Gold Fields company designed a larger tunnel, the machine easier to move in the mine. The company recently changed the way it was mined, using a larger, more efficient excavator to save costs.
The abandoned rubble is placed in a sack and placed in a waste area to provide support for the structure of the mine.
A ton of ore produces about 5 grams of gold, equivalent to the weight of 5 cents or the British 20 pence coins.
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