With the finding of both black boxes of the plane, it would be easy for investigators to ascertain the cause of the crash.
Devotees were not allowed to enter inside the temple premises when Modi was offering prayers.
The round-the-clock rescue work is being carried out by 165 personnel from multiple agencies, including the National Disaster Response Force, State Disaster Response Force, Border Roads Organisation and the Indo-Tibetan Border Police, the State Emergency Operation Centre said.
Since the prime minister's visit in May, not a single day has passed when the 'dhyan gufa' was not occupied by someone, an official said.
A high performance drilling machine was brought in Uttarkashi from Indore on Saturday to pierce through the rubble of the collapsed tunnel on the Char Dham route and was being assembled before it is deployed to resume drilling, officials at the site said.