12 dead, 13 still trapped after suspected methane explosion in Sikkim tunnel; toll may rise

The deceased included migrant workers from West Bengal, Punjab, Assam and Uttarakhand, a senior official said.
The Week

Sikkim tunnel collapse: What caused the explosion that led to the landslide at NHPC project? 10 dead, more trapped

The incident, believed to be caused by an attempt to vent naturally occurring methane gas in the tunnel, triggered an ...

Sikkim Tunnel Collapse: 12 Dead, 13 Trapped After Suspected Methane Blast

At least 12 workers died and 13 remain trapped after a suspected methane gas explosion caused a tunnel collapse at the NHPC ...
India Today NE via MSN

Eight dead, several trapped after methane explosion triggers tunnel collapse at NHPC project in Sikkim

At least eight people were killed and several others remained trapped after a methane gas explosion triggered a landslide ...

Race to reach trapped workers after 10 killed in India tunnel collapse

Race to reach trapped workers after 10 killed in tunnel collapse caused by methane explosion in India - The tunnel is part of ...

Sikkim tunnel blast: 10 dead among 25 rescued after suspected methane leak at hydroelectric project

At least 10 people died after a suspected methane gas explosion inside the under-construction Head Race Tunnel at Samardung, part of the Teesta-VI Hydroelectric Project in Sikkim’s Namchi district.

At least one dead, several trapped as methane explosion triggers landslide inside tunnel in Sikkim

A major rescue operation is underway in Sikkim after a methane gas explosion triggered a landslide inside the under-construction NHPC Teesta Stage-VI tunnel project, trapping several workers deep ...

Dizzy Workers, Inflammable Path: Why Methane Adds To Risk In Sikkim Tunnel Collapse Rescue Ops

Methane is one of the most severe hazards in underground construction because it is highly explosive, invisible, and acts as an asphyxiant ...