Zhengzhou high tech Zone, China[email protected]
Mirny Mine diamond mine in Mirny, Eastern Siberia Udachnaya pipe diamond mine in Yakutia, Russia South Africa. The Big Hole a former diamond mine in Kimberley, dug to 240 m 790 ft between 1871 and 1914, making it the deepest handexcavated pit in the world.Now a museum. The Jagersfontein Mine operating between 1888 and 1971. This was handexcavated to 201 m 660 ft
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