Nantyrarian (Blaendyffryn Mine)Early Mines Research Group
Hammer-stones - hand held crushing implements from Copa Hill, Cwmystwyth

Situated at the head of the Melindwr valley, this small overgrown opencast located some 100 m south of the 19thC engine shaft was the scene of the discovery of stone hammers, ‘wedges’ and mortar stones when it was re-examined by working miners in 1866.

The EMRG surveyed these workings and excavated trenches into the north-east side of the grassy hillock to examine the very shallow and weathered spoil layers (Timberlake 1992).

A radiocarbon date of between 1885 – 1735 yrs cal BC was obtained from charcoal associated with hammer stone flakes.

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