Black River Tunnel project phase 1
![Picture](/uploads/2/3/1/4/23142806/1434551981.png)
Innovative quality control approach for installation and testing of rock bolts in shafts
Tunneling & Underground Construction Magazine
By Jason Edberg, P.E.
Vice President
NTH Consultants, Ltd.
Tunneling & Underground Construction Magazine
By Jason Edberg, P.E.
Vice President
NTH Consultants, Ltd.
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