Rescue operations were temporarily halted at the tunnel in Tapovan, after the water level in the Dhauli Ganga river surged on Thursday; they have now been resumed. 25-35 people are still trapped in the tunnel, for over four days since the glacier disaster.
Security personnel at work inside the tunnel rushed out; and heavy machines engaged in drilling through the debris and sludge were withdrawn.
Hours before the sudden rise in the water, rescuers had begun an operation to drill through the debris from the mouth of the river to reach life-saving devices to the trapped workers.
The ITBP and the Garhwal commissioner who are spreaheading the massive operation said, the focus at the moment is to take life-saving devices such as oxygen cylinders to those trapped. The drilling has to be done for 12 metres to access the probable location to reach those trapped.