Plan showing workings in the No.3 Yard Seam (or Seven Feet at Bwllfa or Five Feet of PD [Powell Duffryn]). Nantmelyn, Bwllfa, Cwmdare, Park, Dare, Graig, Blaengwawr, Cwmbach, No.9, Forge, River Level, Mountain, Blaenant, Werfa and Tunnel. Merthyr Tunnel is also referred to on the plan. The plan is undated but shows workings from 1870s to 1947. Scale 6 Inches: 1 Mile.
Workings in the No.3 Yard Seam in Aberdare, Trecynon and Cwmbach
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- ReferenceGB 214 DNCB/6/14/1/3/2/2
- Dates of Creation[c1947]
- Physical Description1 plan
Scope and Content
Administrative / Biographical History
The location shown on the plan corresponds to Ordnance Survey, Glamorgan Sheets 11SE and 18NE.
Previous reference number: DNCB/75/7/2