to the 5th SRTR on 1 August 1961. On 19 October 1961, its designation changed to the 43rd Separate Engineer Testing Detachment (43-? ????????? ?????????-????????????? ????? (51-? ????)). While subordinated to the Baykonur Cosmodrome the 43rd SET Detachment conducted the state evaluation program of the R-16U type ICBM and accomplished the first launch from an underground shaft on 13 July 1962.

The unit also had the task to demonstrate Soviet ballistic missiles to foreign delegations. For example, the demonstration launch for the French