Plan of Torclawdd or Craig Merthyr Colliery, showing workings under Mynydd Pysgodlyn and Torclawdd. The map is composed of 1st edition OS 1:2500 sheets 7.8, 7.12, 8.5, 8.5, 8.9 and 8.10, with workings and mineral ownership boundaries drawn on.

Archive Unit
  • This material is held at
  • Reference
      GB 216 D/D PRO/HSE 104
  • Dates of Creation
      n.d., late 19th century
  • Language of Material
      English
  • Physical Description
      1 plan, damaged