NHPC’s own 2024 paper recorded gas fires in Teesta-VI tunnels before fatal blast
The National Hydroelectric Power Corporation (NHPC) reported that gas fires occurred in the Teesta-VI tunnels prior to a fatal blast on July 20, 2026. The incident, which resulted from an isolated gas patch near tunnel 4B, left no time for workers to evacuate safely. NHPC stated that the repeated encounters with flammable gas were documented in their own 2024 report, raising concerns about safety protocols at the site.