Site of Pakistan's Chagai-I nuclear bomb tests

On 28 May 1998, a few weeks after India's second nuclear test (Operation Shakti), Pakistan detonated five nuclear devices in the Chagai Hills in the Chaghai district, Balochistan. This operation was named Chagai-I by Pakistan, the base having been long-constructed by provincial martial law administrator Rahimuddin Khan during the 1980s. Pakistan's fissile material production takes place at Kahuta and Khushab/Jauharabad, where weapons-grade plutonium is made by the scientists. Pakistan thus became the 7th country in the world to successfully develop and test nuclear weapons.