Table: Nuclear Defense

SubcategoryNameDescriptionURLTwitter
Shelter ConstructionHardened StructuresDesigns and manages construction of deep underground blast-hardened shelters and EMP-shielded infrastructurehardenedstructures.com
Shelter ConstructionVivosConverts decommissioned military bunkers into co-owned, community-scale underground survival sheltersterravivos.com
Shelter ConstructionRadius EngineeringManufactures and designs modular structural fiberglass-reinforced underground sheltersradiuseng.com
Shelter ConstructionAtlas Survival SheltersManufactures modular corrugated steel pipe and concrete-reinforced underground blast sheltersatlassurvivalshelters.com@atlasshelters
Shelter ConstructionRising S CompanyProduces custom-welded structural plate steel underground bunkers and survival infrastructurerisingsbunkers.com@RisingSCompany
Shelter ConstructionDefcon Underground BunkersFabricates structurally reinforced steel plate shelters matching FEMA hazard mitigation specsdefconbunkers.com
Infrastructure HardeningBechtelMultinational engineering corporation capable of large-scale civil infrastructure hardeningbechtel.com@Bechtel
Infrastructure HardeningKBRGlobal defense and infrastructure contractor providing engineering and logistics solutionskbr.com@KBRinc
Policy / ResearchFederation of American ScientistsPolicy research group providing data on nuclear threat reduction and stockpile trackingfas.org@FAScientists
Policy / ResearchElectric Power Research InstituteNon-profit research group focusing on power grid resilience against EMP and high-altitude detonationsepri.com@EPRInews
Policy / ResearchNuclear Threat InitiativeNon-profit focused on risk reduction, tracking global weapons usable materials, and infrastructure securitynti.org@NTI_WMD
Civil DefenseThe American Civil Defense AssociationOperates the TACDA Academy to provide civil defense training on nuclear weapons effects, manual ventilation schematics, and shielding optimizationtacda.org
Civil DefenseDoctors for Disaster PreparednessCoalition of physicians and scientists focused on tactical emergency response, baseline radiation health metrics, and civil preparedness guidelines
Civil DefenseCore CBRN InternationalDelivers municipal and tactical consulting for CBRN hazard identification, decontamination, and local emergency response trainingcorecbrn.com
Civil DefenseNational Alliance for Radiation ReadinessCoordinates environmental and public health agencies to build localized radiation readiness toolkits and population monitoring frameworks
Shelter ConstructionAndair AGSwiss manufacturer of military-grade blast valves, gastight doors, and CBRN filtration systems; components form the backbone of Swiss public bunkers and European private sheltersandair.ch
Shelter ConstructionBSSD GmbHGerman contractor installing modular blast shelters and custom structural survival bunkers with integrated Swiss-manufactured CBRN overpressure ventilationbssd.de
Shelter ConstructionCastel EngineeringFrench protective firm fabricating specialized NBC airlocks, hatches, and blast-isolation valves for residential, corporate, and institutional clientscastel-engineering.com
Shelter ConstructionSubterranean SpacesUK specialist designing and building bespoke nuclear bunkers and fallout shelters with HEPA/CBRN filtration, blast-hardened panic rooms, and underground residential conversionssubterraneanspaces.co.uk
Shelter ConstructionOribe Seiki SeisakushoJapanese nuclear shelter pioneer since 1939, building shelters to Swiss blast standards and distributing Swiss-manufactured CBRN air filtration systems across Japanoribe-seiki.co.jp
Shelter ConstructionBiggar BunkersCanadian steel bunker fabricator and installer based in Saskatchewan; 26+ years building fallout, tornado, and disease shelters with automated fabrication at competitive pricingbiggarbunker.com