>>2783844Here is something of a reverse view.
There is no doubt that Mallory was on the west side of the North Col, so if Irving was “thrown down” to around the North Col where the glacier basically ends, the glacier could have easily carried Irving’s remains down further.
You can sort of guess a range of how long it took his remains to get from the North Col down to where they were found based on the average speed of a glacier, and it tracks that it probably got to the North Col in the early 90’s, not the 70’s
Potentially his body was thrown down by the Chinese not too long before Mallory’s body was found by Westerners.