HARDENED STRUCTURES ( 1991 ) USA / EU / UAE / ASIA / AUSTRALIA / NZ are Professional Design & Construction Program Management Companies specializing in project secrecy / security, confidential planning, architectural design, clandestine construction of blast mitigated, EMP protected, earthquake strengthened, defendable, off-the-grid fortified eco homes, panic rooms, fire shelters, hurricane, tornado, typhoon, cyclone shelters, underground bunkers & hardened facilities. Constructing A More Secure Future.