Workings in the [Four Feet Seam] in the Mountain Ash and Merthyr Vale areas

Scope and Content

One of four plans to be viewed together showing workings from Ocean Navigation, Cwmcynon, Penrhiwceiber, Cwm-Cynon, Navigation, Deep Duffryn, Merthyr Vale and Bedlinog Collieries, with other pits also shown. This plan is annotated with undated workings and ownership boundary markings. Scale 6 Inches: 1 Mile.

Administrative / Biographical History

This plan comprises the following annotated Ordnance Survey Sheet(s): Glamorgan Sheet 19.

Custodial History

Previous reference number: DNCB/75/158/5