Yes!! An article by two engineers critical of RMBK's design had been published long before. In 'Kommunist' no less (the Central Committee's journal). Source:

Yes!! An article by two engineers critical of RMBK's design had been published long before. In 'Kommunist' no less (the Central Committee's journal). Source: Adam Curtis documentary 'A is for Atom' (1992) KGB censorship is not needed, societies rarely listen to what alarmists/cassandras have to say anyway.