NOV 12: 41 workers trapped inside after a portion of under-construction Silkyara tunnel in Uttarkashi collapsed following a landslide

NOV 13: Excavators remove debris to carve out a path to reach workers; ensure enough water while oxygen and dry fruits are supplied to them

NOV 14: Excavators start drilling with the help of auger machinery to fix a wide steel pipe that would help pull out the trapped workers

NOV 15: Falling debris hamper rescue efforts. Workers remain safe with food, water, and oxygen being supplied through a pipe

NOV 16: A new drilling machine installed as NHIDCL dissatisfied with the first one. New machine to cut through debris 2.5 times faster

NOV 17: Rescuers drill through 24 metres; 4-mm pipes inserted into tunnel. “Large-scale cracking sound” heard as one pipe hits an obstacle

NOV 18: Drilling continues to remain suspended; communication held with workers via radios

NOV 19: No drilling again. Union Minister Nitin Gadkari says horizontal boring with huge auger appears to be the best option

NOV 20: PM Modi calls on progress with CM Dhami. Rescuers push through new pipeline that could supply cooked food

NOV 21: First video of trapped workers out after a camera sent in through new pipeline. Two explosions carried out at Balakot end of tunnel

NOV 22: 32 metres of estimated 60 metres drilled for workers to crawl out; drilling hampered after some iron rods come in way of auger

NOV 23: Drilling resumes; ambulances, medical support kept on standby. Rescue operation enters final stages

NOV 24: Rescue efforts again hampered after the auger machine faced a hurdle soon after the drilling resumed

NOV 25: Rescue works further slowed as rescue teams mulled drilling through last 10 metres of debris manually

NOV 26: Rescuers start drilling vertically from top of the mountain, which comes to about 86 metres

NOV 27: Rescuers bring in rat miners to drill remaining portion. NDMA said rain expected but ops won’t be hit

NOV 28: Rescuers drill through rocks and debris to finally reach workers