Related to workers entering potentially explosive, toxic, and/or oxygen deficient atmospheres at the Nevada National Security Site.

On July 12, 2021, the U.S. Department of Energy (DOE) Office of Enterprise Assessments’ Office of Enforcement notified Mission Support & Test Services, LLC, the managing and operating contractor for the Nevada National Security Site (NNSS), of its intent to investigate potential deficiencies in the implementation of DOE’s 10 C.F.R. Part 851 Worker Safety and Health Program requirements at the NNSS.