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Bolivia leverages CTBT data to launch first-ever seismic design code

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Advancing operations and maintenance: Highlights from CTBTO’s IMS technical meeting

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CTBTO detects two earthquakes in northern Iran on 5 October

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Seismic shift: CTBTO's data key to rapid tsunami alerts, advancing SDG goals

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Diving deep: CTBTO data helps discover new pygmy blue whale population

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Our Mission

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Ending Nuclear Tests

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Member States reappoint Robert Floyd as CTBTO Executive Secretary

Lessons learned to action: OSI Workshop-26 gears up for Integrated Field Exercise

Art, peace and sustainability: mural unveiled at Vienna International Centre

Build-Up Exercise 2024: OSI capabilities tested in new terrain

Papua New Guinea ratifies CTBT, advancing Treaty universalisation in Pacific

Schedule of sessions

Working Group A

Sixty-Seventh Session Of Working Group A

22 May 2025 -23 May 2025

Preparatory Commission

Sixty-Fourth Session Of The Preparatory…

23 Jun 2025 -25 Jun 2025

Working Group B

Sixty-Fifth Session Of Working Group B

25 Aug 2025 -05 Sep 2025

Training and Workshops

Technical Training For Waveform Station…

19 May -23 May 2025

Technical Meeting On The Idc Validation And…

08 Apr -10 Apr 2025

Technical Training For Station Managers Of…

17 Mar -21 Mar 2025

Executive Secretary

Biography of Robert Floyd

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CTBTO Fact Sheet

International Monitoring System (IMS) Map

Verification Regime Brochure

Civil and Scientific Applications Brochure

On-Site Inspection Brochure

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Join CTBTO on our mission to create a world free of nuclear testing. Learn more about employment and business opportunities with the Provisional Technical Secretariat.

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