Though many agencies helped make it happen, the courage and tenacity of the rat-hole miners and those who worked for long hours for the cutting operations inside the pipe were truly inspirational. They are the real heroes, along with the 41 trapped workers who displayed unflagging fortitude.
There could be several possible reasons for the collapse like geological investigation, under-designed ground support systems, mistakes during construction, poor data monitoring and mitigation measures during construction or poor supervision control: Project head of Zojila Tunnel
The dramatic scenes of the first men emerging on stretchers from the entrance of the Silkyara-Barkot tunnel came after more than 400 hours, during which the rescue operation hit multiple obstacles, delays and false promises of imminent rescue, says the British newspaper