X-108B Security Portal

Facility Information

  • Manned by security personnel and used as checkpoints when entering and exiting controlled areas
  • One of three remaining original portals used for pedestrian access
  • Located near X-720 Maintenance and Stores building
  • Served as security checkpoint since 1955

Take a Look Inside the Plant

Using our interactive map, you can locate individual buildings within the plant and learn more about its purpose throughout history. Clicking on a building will bring you in-depth information, photos, and videos.

Click Here to See Interactive Map