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Due to poor weather and road conditions, SURF will remain CLOSED for Wednesday, May 22 day shift. Essential personnel only. This message will be updated at 2:00 p.m. this afternoon.
Watch this page and Social Media for the latest information or call the weather hotline at 605-722-0002 for updates.personnel

Sanford Underground Research Facility

630 E. Summit Street
Lead, SD 57754
Main phone: (605) 722-8650
Operations Status/Weather line: (605) 722-0002

Fermi National Accelerator Laboratory

P.O. Box 500, MS 200
Batavia, Illinois 60510

Please contact us directly with questions regarding construction of the LBNF/DUNE project.