World’s Biggest Diamond Mine Mir mine also called Mirny Mine is an open pit diamond mine located in Mirny, eastern serbia , Russia. The mine is 525 meters (1,722 ft) deep (4th deepest in the world) and has a diameter of 1,200 m (3,900 ft),[1] and is the second largest excavated hole in the world.
The airspace above the mine is closed for helicopters because of a few incidents in which they were sucked in by the downward air flow.
The mine is Located in Mirna , Eastern Siberia as shown in Map Below
History
The mine was discovered on June 13, 1955 by Soviet geologists Yuri Khabardin, Ekaterina Elagina and Viktor Avdeenko during the large Amakinsky Expedition in Yakut ASSR. They found traces of volcanic rock kimberlite which are usually associated with diamonds. This finding was the first success in the search for kimberlite in Russia, after numerous failed expeditions of the 1940s and 1950s. For this discovery, in 1957 Khabardin was given the Lenin Prize, which was one of the highest awards in the Soviet Union.The development of the mine had started in 1957 in extremely harsh climate conditions. Seven months of winter per year froze the ground into permafrost, which was hard in winter, but turned into sludge in summer. Buildings had to be raised on piles, so that they would not sink in summer, and the main processing plant had to be built on a better ground found 20 km away from the mine. The winter temperatures were so low that car tires and steel would shatter and oil would freeze. During the winter, the workers used jet engines to defreeze and dig out the permafrost or blasted it with dynamite to get access to the underlying kimberlite. The entire mine had to be covered at night to prevent the machinery
If you zoom the picture below you will see Aircraft on right of the mine looks like an Ant
Mine at night
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