Beynons Colliery, Blaina – LB20 Carrier Road 1969

Beynons Colliery, Blaina – LB20 Carrier Road 1969

Beynons Colliery, Blaina.
Beynons Colliery, Blaina. A Plan of the roof supports on the LB20 Carrier Road. Dated 1969.

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