What It Really Takes to Build Underground—and Why Modular Made It Possible
Audree Grubesic. Apr 13. 4 min read.
Project context
The article describes restroom infrastructure installed 4,850 feet below the surface in SURF, a former gold mine turned research facility.
Nate Sanchez, a plumbing contractor with Harrison Western, is shown installing a bathroom pod on the 4850 Level of SURF.
Why underground construction is difficult
- No wide-open job sites.
- No predictable geometry.
- Limited access to materials and equipment.
- Tight tunnels and uneven rock walls.
- Plumbing and electrical work take longer and are harder to fix.
Modular solution
The team worked with B&T Manufacturing to design, engineer, and complete prefabricated restroom pods offsite.
The pods were built as near plug-and-play systems.
- Built to fit transport systems used underground.
- Fully integrated with plumbing and electrical systems.
- Designed for rapid placement and connection onsite.
- Manufactured in a controlled environment for quality.
Logistics and installation
The pods were engineered to move through the same vertical shaft system used for people and equipment.
Underground installation became placement and connection, not construction from scratch.
Infrastructure challenges
Wastewater could not tie into a municipal system.
A multi-stage treatment process was used onsite. It was self-contained and designed for underground use.
Historical comparison
Before modern upgrades, underground workers used a railcar system called the “Red Wagon” for sanitation.
The article contrasts that system with current high-performance modular infrastructure.
Industry takeaway
- Solve complexity before it reaches the job site.
- Align design with logistics from the beginning.
- Deliver repeatable results.
- Reduce risk in difficult environments.
The article argues that modular construction is about building with intention, not just speed.
FAQ summary
- Modular construction reduces onsite work in constrained underground environments.
- Modules can be designed to fit existing shaft and conveyance systems.
- Underground construction is challenged by space, surfaces, access, and utilities.
- Modular systems can pre-integrate plumbing and electrical components.
- Projects like this point toward more industrialized construction methods.
More information
https://sanfordlab.org/news/engineering-amenities-americas-underground-lab