WASHINGTON, June 25 -- The Defense Nuclear Facilities Safety Board Resident Inspector in Los Alamos National Laboratory issued the following activity report for the week ending June 6, 2025: * * * TO: Technical Director FROM: Los Alamos Site Resident Inspectors SUBJECT: Los Alamos Activity Report for the Week Ending June 6, 2025 Plutonium Facility--Criticality Safety: Facility personnel identified a concern that materials that are effective neutron reflectors may not be explicitly bounded b  more