Workings in the Gorllwyn and Gorllwyn Rider Seams in the Upper Rhondda

Scope and Content

The following collieries are referred to on the plan: Fernhill, Rhondda Merthyr, Bute, Tydraw, Blaen Rhondda, Bute Merthyr, Lady Margaret, Ynysfeio, Abergorky, Tyla Coch, Eastern, Maendy, Dare, Park and Maerdy. The plan is undated but shows workings from 1893-1945. The plan is also annotated with unidentified estate boundaries. Scale 6 Inches: 1 Mile.

Custodial History

Previous reference number: DNCB/75/11/3