A rescue mission to save 41 workers trapped in a tunnel in India's Uttarakhand state has been delayed again because of a problem with the drilling machine.
The US-made machine is being used to drill through the debris to create an escape route for the workers.
Officials say the machine is being repaired and that drilling work is likely to restart on Friday.
The workers have been stuck inside the tunnel for 12 days after a portion of it collapsed due to a landslide.
A section of the 4.5km (3 miles) Silkyara tunnel in the Indian Himalayas caved in on 12 November.
Contact was established with the trapped men shortly thereafter, and they have been receiving oxygen, food, and water ever since.
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