Thanks Senior Maldonado.
There is a thread where such stages were found , in china I think. Glennm posted them before you joined.
My problem is , is that's a launch stage and it falls from the lower atmosphere. It was the same for the r7 booster rockets. They would fall and that's what's reported in the 17th of March 1959 statements I think.
From my understanding, no early stage of the known rockets can be above dyatlov pass , if the main stage was to be over the pass it could only be in the upper orbit travelling extremely fast.
That's my understanding of it at least.
The only other potential objects are a plane, or spy balloons?