France
- SETE
19/11/22, 20/11/22, 21/11/22, 22/11/22, 23/11/22, 24/11/22, 25/11/22, 26/11/22, 27/11/22
Description:
Presenting a system to excavate Tunnels by coring, therefore recovering the rocks, decreasing the mud and drilling waste produced, and the energy requirements
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