Хронология Home Course of events Kazkahstan in Soviet Union List 4 (1946-1970) List 4 (1946-1970) Election of Z.Shayakhmetov as the first secretary of the Central Committee of VKP Kazakhstan 1946 The first nuclear test on the Semipalatinsk nuclear range. 1949, August 29 The beginning of development virgin and laylands in Kazakhstan. 1954 The second turn of the Aktyubinsk plant of chromic connections became operational, that allowed to increase output almost by 3 times. 1963