Tunneling and Mining (31 70 00)
Includes: Tunnel boring, bracing and jacking work, including excavating, linings and casings, grouting support systems, boring machines, control and spoil removal systems.
Tunneling and Mining (31 70 00)
Tunneling and Mining (31 70 00) | ||||
Code | Description | |||
31 71 00 | Tunnel Excavation | |||
31 74 00 | Tunnel Construction |
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