Here is a list of companies that specialize in boring tunnels, digging underground, and constructing underground facilities:

Here is a list of companies that specialize in boring tunnels, digging underground, and constructing underground facilities:

1. The Boring Company

   • Specializes in tunnel construction and advanced tunneling technologies. Known for projects like the Vegas Loop.
   • The Boring Company​ (The Boring Company)​​ (The Boring Company)​

2. Bechtel

   • A global leader in engineering, construction, and project management with extensive experience in tunneling projects.
   • Bechtel​ (Bechtel EC&PM)​

3. Murphy Group

   • Provides comprehensive underground construction services, including tunnel boring and underground infrastructure development.
   • Murphy Group​ (Murphy Group)​

4. Boring Companies

   • Offers a variety of tunneling methods including hand mining, conventional tunneling, and microtunneling.
   • Boring Companies​ (Boring Companies)​

These companies have proven expertise and innovative solutions for underground construction projects, making them key players in the development of subterranean cities and infrastructure.