# ‘The richest in all Wales!’: the Welsh Potosi or Esgair Hir and Esgair Fraith lead and copper mines of Cardiganshire

> book published in 1983

**Wikidata**: [Q108773738](https://www.wikidata.org/wiki/Q108773738)  
**Source**: https://4ort.xyz/entity/-the-richest-in-all-wales-the-welsh-potosi-or-esgair-hir-and-esgair-fraith-lead-and-copper-mines-of-cardiganshire