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Aberfan Parents' and Residents' Association records
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One plan of each of the seven seams in the vicinity of the Tip. To go with these seven plans ....

One plan of each of the seven seams in the vicinity of the Tip. To go with these seven plans will be a transparent surface plan with which the underlying workings can be related to the surface. The tips will also be shaded opaque on each of the mining plans. Annexed to the proof of Mr R. J. Piggott (K.36) as RJP2-8.

Ordnance Survey Map 1957 with superimposed transparencies of all the watercourses (marked in various colours) shown in the three Ordnance ...,

Ordnance Survey Map 1957 with superimposed transparencies of all the watercourses (marked in various colours) shown in the three Ordnance Surveys since 1866 prepared by the National Coal Board from information in Ordnance Survey Maps. Annexed to the proof of Mr R. J. Piggott (K.36) as RJP9.

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