Archive · 21 Jul 2026
Teesta-VI Tunnel Blast Kills 10, Traps 25
A big explosion happened in a tunnel that was being built for a hydroelectric project in South Sikkim.
The explosion was caused by methane gas that was trapped inside the rocks.
At least 10 people died, and 25 others are trapped inside the tunnel.
Rescue teams are working hard to save the trapped people, but they are facing difficulties because of toxic gases and heavy rain.
The government is helping with money for the families of those who died and those who were injured.
The company building the tunnel is also investigating what caused the explosion.
At least 10 people died and 25 were trapped in a methane gas explosion in the Teesta-VI Hydroelectric Project tunnel in South Sikkim.
The explosion occurred at 1.04 pm on July 20, triggered by suspected methane gas trapped in rock formations.
NHPC activated emergency protocols and is coordinating with multiple agencies for rescue operations.
Rescue teams are facing challenges due to toxic fumes, heavy rainfall, and waterlogging.
The Prime Minister announced financial assistance for the families of the deceased and the injured.
- Who
- 25 personnel trapped, 10 dead; rescue teams including NHPC, National Disaster Response Force, State Disaster Response Force, Directorate General of Mines Safety
- What
- Methane gas explosion in under-construction Head Race Tunnel
- When
- July 20 at 1.04 pm
- Where
- Samardung, South Sikkim
- Why
- Suspected methane gas burst trapped inside rock formations
NHPC's Response
Critics' Concerns
Safety Measures
NHPC's Response
NHPC activated emergency protocols and is coordinating with multiple agencies for rescue operations.
Critics' Concerns
Critics question the adequacy of safety measures in place before the incident.
- Location
- Samardung, South Sikkim
- Date
- July 20
- Time
- 1.04 pm
- Project
- Teesta Stage-VI Hydroelectric Project
- Casualties
- At least 10 dead, 25 trapped
- Rescue Teams
- NHPC, National Disaster Response Force, State Disaster Response Force, Directorate General of Mines Safety
- Government Assistance
- ₹2 lakh for each deceased, ₹50,000 for each injured from PM's Relief Fund