North Sea Gas Main, Dowlais/Nelson section, Subsidence and Displacement Profiles from Working Seven Feet Panels from Taff Merthyr Colliery

Scope and Content

Produced by National Coal Board, South Wales Area. Scale 1:2500. Drawing number SWA/MS/10/18/21A.

Custodial History

Original reference: DNCB/73/62/7