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India Jul 23, 2026 · min read

Sikkim Tunnel Collapse Kills 22 Workers in NHPC Project

Rescue teams in Sikkim have recovered 22 bodies from a collapsed NHPC tunnel. Officials suspect a methane gas explosion caused the tragedy. Search operations are ongoing.

Civic News India

Civic News India

Civic News India

Sikkim Tunnel Collapse Kills 22 Workers in NHPC Project

TL;DR — Quick Summary

Twenty-two workers' bodies have been pulled from a collapsed hydropower tunnel in Sikkim. Rescue teams are still searching for three more workers trapped inside.

Key Facts
Bodies recovered
22
Workers trapped at time of incident
25
Location
Namchi district, Sikkim
Project
NHPC Teesta Stage VI Hydropower Project
Cause
Suspected methane gas explosion
Date of collapse
Monday afternoon
Status
Rescue operations continue

A grim rescue operation in Sikkim has turned into a recovery mission after the bodies of 22 workers were pulled from the debris of an under-construction tunnel. The tunnel was part of the NHPC Teesta Stage VI Hydropower Project in Namchi district, officials confirmed.

What Happened at the Sikkim Tunnel Site

The tragedy unfolded on Monday afternoon when a section of the tunnel collapsed. Officials suspect the collapse was triggered by an explosion caused by methane gas trapped inside the rocks. At the time of the incident, 25 workers were inside the tunnel. Dense fumes and toxic gases engulfed the area after the blast, making rescue efforts extremely difficult.

According to ETV Bharat, officials have stated there is "no possibility" of finding survivors among the remaining trapped workers.

Rescue Operations and Challenges

Rescue teams equipped with specialized equipment have been working around the clock to clear debris and recover the trapped workers. The operation has been slow and dangerous due to the presence of toxic gases and the unstable structure of the collapsed tunnel.

As reported by NDTV, seven bodies were initially recovered after a landslide damaged the tunnel and led to a gas leak. The number of recovered bodies has since risen to 22.

"Rescue operations remain in progress, with specialised teams working..." — Sikkim Live

Workers Had Raised Safety Concerns

Reports indicate that workers at the site had previously flagged safety risks, but their concerns were not addressed. This has raised serious questions about safety protocols at the hydropower project.

According to ETV Bharat, one worker stated that risks were flagged but no one cared. This points to a possible failure in safety oversight that may have contributed to the disaster.

Our Take: A Preventable Tragedy

This is a devastating loss of life. Twenty-two workers have died doing their jobs, and three more are still missing. In our view, this tragedy raises serious questions about safety standards at construction sites, especially in high-risk projects like hydropower tunnels. If workers had indeed raised concerns about gas leaks or structural issues, those warnings should have been taken seriously. The fact that they were not is deeply troubling. Authorities must conduct a thorough investigation and ensure that those responsible are held accountable. The families of the victims deserve answers, and the industry must learn from this disaster to prevent it from happening again.

Civic News India

Written by

Civic News India

Senior Reporter