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Amgueddfa Cymru – Museum Wales
'National Coal Board South Wales Area. Report No. 850/12/2. Mines & Quarries Tip Regulations Regulation 12 Report. Brynlliw Tip 850 Classified Active at Brynlliw Colliery Grovesend Gorseinon West Glamorgan'. 21 pages with additional pages of plans and diagrams.
