Comprehensive Test Ban Treaty Organization

The CTBTO is the international organization responsible for ensuring that no nuclear explosion goes undetected. It uses four complementary verification technologies: seismic, hydroacoustic, infrasound and radionuclide monitoring. Traces of the radionuclide noble gas xenon 133 were registered after the 2006 DPRK nuclear test, but there were no detections following the 2009 DPRK test. In total, over 87 percent of the CTBTO's 337 monitoring facilities are now up and running; see interactive map. The DPRK's action had been strongly condemned by Tibor Tóth, the Executive Secretary of the CTBTO, and by Jan Petersen, Chairperson of the CTBTO's executive body. Broadcasters - see CTBTO Newsroom forbroadcast quality video and audio available, free of rights, for broadcasters to download. The package includes animation, sound bites and b-roll including from the CTBTO's Takasaki radionuclide and noble gas monitoring station in Japan.