Please note: Owing to heightened security measures at Berkeley Lab, all visitors must be able to provide picture identification at the entrance to the laboratory. Visitors from outside the U.S. should be prepared to show a valid passport.
See Access to the ALS for additional information about visitor procedures at the ALS.
Note: If you miss the 3:00 p.m. deadline, call the Site Access Office (ext. 4551); after 5:00 p.m. on weekdays, and on weekends and holidays, call security the guard on duty at Blackberry Gate (ext. 5472).