Draft report, 'Effects of Working Seams at Merthyr Vale Colliery on the Dirt Tips at Aberfan', R J Orchard, Chief Surveyor and Minerals Manager (X37)

Scope and Content

Copy of a draft report with three accompanying plans and three graphs.

Custodial History

Previous reference number: DNCB/58/6. National Coal Board Reference: RO/11/26.