Raise boring rig Robbins 123RH

Outokumpu Chrome ventilation shaft 2018-2021

Background to the project:
Outokumpu made a large expansion of its mining operations and a number of shafts for ventilation were to be drilled

18 ventilation shafts between 45-589m in 3.5-4.5m diameter with varying inclination between 60-90 degrees

Performed by rig:
Epiroc Robbins 123RH
Rhino 2000