Silkyara Tunnel Rescue: The Indian Army has now joined the rescue operations to evacuate 41 trapped labourers inside the Uttarakhand tunnel which encountered another trouble after the American auger machine, critical for horizontal drilling, broke down. This comes after around two weeks of relief efforts aimed at saving the workers who got trapped after the Silkyara tunnel collapsed on Nov 12. The experts at the site have said that with the auger machine in irreparable condition, only the option of vertical and manual drilling is left to save the workers. The army personnel are tasked with manual drilling into the tunnel.