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The machine uses a combination of jacking to push pipe casings into the soil and an auger to remove the spoil from the inside of the casings as they progress through the bore
NHIDCL officials supervising the rescue operations on the spot had on Tuesday said the auger machine will be put back into operation after the 800-mm diameter steel pipes are pushed through the 900-mm diameter steel pipes already laid through the rubble using the telescopic method.
Uttarakhand CM Pushkar Singh Dhami said that he briefed Prime Minister Narendra Modi about the ongoing rescue operations at Silkyar tunnel. | Latest News India
Location has been identified for vertical drilling to bring out 41 workers trapped inside Silkyara Tunnel, 11 days after the underconstruction structure collapsed. Uttarakhand Tunnel Collapse: Location for Vertical Drilling Identified To Evacuate 41 Workers Trapped Inside Silkyara Tunnel (Watch Video).
The horizontal drilling operation, initially paused on Friday due to a challenging obstacle encountered by the American-made heavy-duty auger machine after 22 meters, which recommenced on Tuesday. The drilling efforts have progressed to 42 meters, marking 67 percent advancement in clearing the blockade.