Deep Drilling
From ETHW
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On the Kola peninsula, Soviet drillers reach a depth of 40,230 feet, still the deepest hole ever drilled, and the deepest artificial point on Earth, 1989
This article is a stub, you can help by expanding it.
On the Kola peninsula, Soviet drillers reach a depth of 40,230 feet, still the deepest hole ever drilled, and the deepest artificial point on Earth, 1989