<p> Uttarkashi: The auger machine engaged for drilling through the rubble at the Silkyara tunnel to rescue 41 trapped workers has busted, international tunnelling expert Arnold Dix said on Saturday.</p>.<p>"Augering is finished...the auger is broken, destructed," he told reporters in Silkyara.</p>.Uttarkashi tunnel collapse: Options of manual drilling, creating vertical escape route being considered.<p> The auger machine was facing repeated obstructions in the rubble in the past few days.</p>.<p> When asked about other options such as vertical or manual drilling, he said all options are being explored.</p>.<p>"Every door we are opening has its advantages and disadvantages. What we have to ensure is the safety of the rescuers as well as those who are trapped," he said.</p>.<p> The multi-agency rescue effort began November 12 when a portion of the under-construction tunnel on Uttarakhand's Char Dham route collapsed following a landslide, trapping the 41 workers inside.</p>
<p> Uttarkashi: The auger machine engaged for drilling through the rubble at the Silkyara tunnel to rescue 41 trapped workers has busted, international tunnelling expert Arnold Dix said on Saturday.</p>.<p>"Augering is finished...the auger is broken, destructed," he told reporters in Silkyara.</p>.Uttarkashi tunnel collapse: Options of manual drilling, creating vertical escape route being considered.<p> The auger machine was facing repeated obstructions in the rubble in the past few days.</p>.<p> When asked about other options such as vertical or manual drilling, he said all options are being explored.</p>.<p>"Every door we are opening has its advantages and disadvantages. What we have to ensure is the safety of the rescuers as well as those who are trapped," he said.</p>.<p> The multi-agency rescue effort began November 12 when a portion of the under-construction tunnel on Uttarakhand's Char Dham route collapsed following a landslide, trapping the 41 workers inside.</p>