Yet for all the disruption it caused, the incident paled in comparison to the catastrophic blaze that engulfed Summit Tunnel on December 20, 1984. How the T&A reported on the fire in 1984 at Summit Tunnel (Image: T&A archive)The T&A reported how crews from as far afield as Bradford, Odsal, Fairweather Green and Haworth were called to the incident. Fire engines outside Standedge Tunnel on Sunday (Image: Newsquest)Standedge Tunnel, where Sunday's fire occurred, is the younger of the two structures but arguably more impressive in scale. Lessons from historyThe Summit Tunnel disaster prompted significant changes to how Britain transports hazardous materials by rail. TransPennine Express services were diverted via the Calder Valley line - ironically through Summit Tunnel.