7 samyg huge holes in the ground

1. kimberlite pipe "Mir» (Mir diamond pipe), Yakutia. Mined diamonds to the present. 1200 meters outer diameter and 525 meters depth.

2. kimberlite pipe "Big Hole", South Africa. The largest of the excavated "by hand" - 1097 meters in depth. Moved to the surface more than 22 million. M. Of rock and produced 3 tons of diamonds. Development completed in 1914.


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