40 years after Chernobyl: In Kazakhstan, the forgotten memory of the 'liquidators'

In the days following the explosion at the Chernobyl nuclear power plant on April 26, 1986, more than 30,000 Kazakhs were sent to the Ukrainian site to help with the cleanup. Those who survived the radiation are finding it increasingly difficult to be acknowledged as victims, even as their country has embarked on a civilian nuclear program.