
The Sandia National Laboratories in New Mexico temporarily closed parts of the MESA complex where it produces radiation-hardened microelectronics for nuclear weapons after someone working there tested positive for COVID-19. However, the Department of Energy-operated, nuclear weapons-engineering labs network said it planned to reopen Buildings 858N and 858EF on Thursday morning, after shutting them down for deep cleaning. Sandia is attempting contact tracing with “state and federal health officials” to determine where else on its sprawling campus, and elsewhere, the…