Arnold Dix says Nepal rescue teams face challenge unlike any before

The Australian tunnel expert, who arrived in Kathmandu on Saturday, joined Nepali and Indian teams searching for people believed to be trapped inside the Chilime hydropower tunnel.

Australian tunnel expert Professor Arnold Dix, who is in Nepal to assist search and rescue efforts at the Chilime Hydropower Project, says the teams working there are confronting a challenge unlike anything they have faced before.