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The First Modern Tunnel Boring Machine
In 1952 James Robbins developed the first modern Tunnel Boring Machine for the Oahe Dam Project in South Dakota, USA. The machine used drag bits and dumbbell-shaped cutters to successfully excavate weak shale rock.
- Cooperative Innovation at the Manhattan Tunnel Project: Digger Shields with Expandable Segments to Excavate Complex Fill
- Robbins celebrates TBM acceptance for Ellicott City North Tunnel
- Huge Robbins Slurry TBM breaks through in Hiroshima
- Robbins TBMs break through at Delhi Metro DC-07 Project
- RETC 2025