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Earthwork (31)  

Tunnel Excavation (31 71 00)

Tunnel Excavation (31 71 00)

Tunnel Excavation (31 71 00)
Code	Description
31 71 13	Shield Driving Tunnel Excavation
31 71 16	Tunnel Excavation by Drilling and Blasting
31 71 19	Tunnel Excavation by Tunnel Boring Machine
31 71 23	Tunneling by Cut and Cover

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Companies for Tunnel Excavation

Companies for Tunnel Excavation
RFI	Company	Description	City, state
	Mergor, Underwater Construction - Strukton Betonbouw b.v.	Mergor, in Latin means “to immerse” and that describes exactly the core of the company, the immersion of tunnel elements. Mergor, a tough name that stands for strength and...	UTRECHT (NL)
	Smith-Midland Corp.	Suppliers of quality precast concrete products.	Midland, VA
	Mott MacDonald	Specialists in all forms of tunnel design and construction in soft ground and hard rock by TBM, drill and blast, immersed tunnel and jacked box techniques. We have planned and designed numerous road,...	Rockville, MD