1st (Oct. 9, 2006) Testing material: plutonium Magnitude of artificial earthquake: 3.9 Explosive power: 1 kiloton Interval between rocket launch and nuclear test: 33 months

2nd (May 25, 2009)Testing material: plutonium Magnitude of artificial earthquake: 4.5 Explosive power: 2-6 kilotons Interval between rocket launch and nuclear test: 50 days

3rd (Feb. 12, 2013)Testing material: presumably highly enriched uranium Magnitude of artificial earthquake: 4.9-5.1 Explosive power: 6-16 kilotons Interval between rocket launch and nuclear test: two monthsGraphic


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