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Amgueddfa Cymru – Museum Wales
Two technical drawings/plans printed in black ink on off-white paper. Two copies of the same plan. 88.99I/22 (1) contains details handwritten in pencil on the plan. 'National Coal Board S.W. Division Area No.9. Abernant Collliery Section Along No.1 West Cross Cut.' Seams : Big, Black, Peacock, Brynlloi, Middle, Lower. Scale : 1:5000 Dated 6.7.55.
