On february 12, 1989 a 90 kiloton nuclear bomb was detonated at the Semipalatinsk test site. Television reports reassured everyone: 'Background radiation is normal'. But just two days later, in the village of Chagan, 110 km from the epicenter, radiation levels were 200 times higher than normal. Radioactive gases escaped through cracks in the ground for two days straight, blanketing neighborhoods, home to over 30,000 people. The city of Semipalatinsk was lucky—the wind was blowing in the opposite direction. The frightening consequences did not keep the military from carryinf out another explosion on february 18.
This was the final straw. People protested. Keshirim Boztayev, first secretary of the East Kazakhstan region, wrote
an urgent telegramm to Gorbachev. In this, he stated that the tests were taking place in a densely populated region, harming homes, wells, and people's health. He asked that the number of explosions should be reduced immediately and the test site be moved to another location.
A few days later, a government commission arrived in Semipalatinsk. All its members were military personnel. They assured that the radiation was 'like a television', and the gases were 'non-hazardous and safe'. However, following the visit, it was decided to reduce the frequency and power of the tests.
There was no talking yet of completely closing the test site - the military resisted.