25/05/17 18:47 MOEX (RUR): 81.10 change in % 2.95 LSE (USD): 5.86 change in % 0.18

Glossary

Drilling

The process of constructing a mine opening (holes, wellbores, less frequently pits and pit shafts), mainly of a round cross-section in the Earth's crust, to study geological framework, engage in prospecting, exploration, mining, geotechnical investigation, and other activities.


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