Realizing that the burial place was no longer a secret, the Bolsheviks tried to burn some of the bodies but were unsuccessful; modern forensics recognizes that bodies can be cremated only with high heat and under certain conditions.
The burial place was no longer a secret. The Bolsheviks were realizing this. The Bolsheviks tried to burn some of the bodies. The Bolsheviks were unsuccessful. Bodies can be cremated only with high heat and under certain conditions. This is what Modern forensics recognizes.