(relating to airfield buildings) afforded maximum protection against effects of nuclear blast
refers to durable construction designed to withstand heavy use and sometimes deliberate abuse. Examples include 1/4" tempered window glass and plywood reinforced interior wall sheeting
Affording maximum protection against effects of nuclear blast
Pertaining to the condition of a facility with protective features that enable it to withstand destructive forces, such as explosions, natural disasters, or ionizing radiation.
made hard or flexible or resilient especially by heat treatment; "a sword of tempered steel"; "tempered glass"
A structure that has been designed/modified to withstand blast, shock and other weapon effects. See Blast, Blast Wave, Shock Wave.