World's Biggest Diamond Mine is located at Mirna, Eastern Siberia, Russia. The mine is 525 meters (1,722 ft) deep and has a diameter of 1,200 m (3,900 ft).
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 from freezing. Kimberley Big Hole
[youtubeHD=640,450]42dBMz6GMKs[/youtubeHD] The Big Hole, Open Mine or Kimberley Mine is an open-pit and underground mine in Kimberley, South Africa and is largest hole excavated by hand. The Glory Hole - Lake Berryessa
This really is called the Glory Hole named by local folks long before the term or words "Glory Hole" were considered pornographic. Monticello Dam at Lake Berryessa in Napa County, CA. hosts this drain also referred to as the "Morning Glory".
The reason it is called the "Black Hole" by Pilots of airlines or helicopters is because that's what they see from the sky (A Black Hole) when the "Glory Hole" is in action.
The Glory Hole has not been seen in action at Monticello Dam in Lake Berryessa since this video was taken back in MAY of 2007. Kennecott's Bingham Canyon Copper Mine
The Bingham Canyon Mine, also known as the Kennecott Copper Mine, is an open-pit mining operation extracting a large porphyry copper deposit southwest of Salt Lake City, Utah, USA, in the Oquirrh Mountains. It is the deepest open-pit mine in the world. The mine is owned by Rio Tinto Group, an international mining and exploration company headquartered in the United Kingdom. The copper operations at Bingham Canyon Mine are managed through Kennecott Utah Copper Corporation which operates the mine, a concentrator plant, a smelter, and a refinery. The mine has been in production since 1906, and has resulted in the creation of a pit over 0.75 miles (1.2 km) deep, 2.5 miles (4 km) wide, and covering 1,900 acres (7.7 km²). According to Kennecott, it is the world's largest man-made excavation. It was designated a National Historic Landmark in 1966 under the name Bingham Canyon Open Pit Copper Mine. The Blue Hole, Belize Barrier Reef
The Great Blue Hole is essentially a collapsed underwater cavern, where you can find the surreal combination of stalactites and sharks. The cavern bottoms out at over 400 ft and is 1000 in diameter, almost perfectly circular. Diavik Mine Canada
Daniel Jaeb is an Underground Miner at Diavik Diamond Mine in the Northwest Territories. Local, northern and Aboriginal, he received training and certification in underground mining through the North's Mine Training Society. He enjoys the many pastimes that come with living in Canada's North. Black Hole in Guatemala June 2010
Trou Noir au Guatemala Black dark Hole in immeuble englouti 01 06 2010 june juin catastrophe naturelle OVNI UFO building engulfed disaster Susumu hirasawa forces god hand remix chrétien christianisme islam juif musulman judaïsme jésus allah À Guatemala city, les fortes pluies ont provoqué des glissements de terrain. Un immeuble de trois étages a littéralement englouti, laissant un vaste trou noir en pleine ville. Un trou profond de 60 mètres et large de 30.agatha tempête trou guatemala hole deep hell enfer OIL SPILL GUATEMALA VOLCANO EARTHQUAKE Guatemalan sink hole earth swallows guatemala hell's gaping maw unnatural disaster hollow evidence undeniable tragedy Earth finally fighting back. Tropical Storm Agatha Guatemala River bridge sink hole RT hole in Guatemala City sink hole video pictures giant sinkhole crater guatemala tropical storm Agatha torrential rain floods UFO mystery death toll natural disaster accident mudslide underground earth deep swallowed A three-storey building has collapsed and fell into an enormous sink hole in Guatemala City. The giant 200ft-deep crater appeared after Guatemala was hit by tropical storm Agatha, bringing torrential rains and causing deadly mudslides. Witnesses claim at least one man was inside the house when it was swallowed, and several others remain missing.A great hole swallows house of 3 floors, the hole so huge that it is imposible to see the house or the limit of the hole botton. How Sinkholes like Guatemala happen