The Outokumpu borehole from above. It is a A 2,516-metre deep vertical window, 22 cm in diameter, to crystalline bedrock dating back 1.9 billion years. Volatile organic compounds (VOC), were ...
The Outokumpu borehole from above. It is a A 2,516-metre deep vertical window, 22 cm in diameter, to crystalline bedrock dating back 1.9 billion years.
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