No. 1 Area. Mountain Colliery. No. 2 Underground Borehole down from the Swansea Six Feet Seam. Four Seams at 49ft.10ins to 968ft8ins. Thin Coals Between 470ft and 630ft. Sep 1954

  • This material is held at
  • Reference
      GB 216 D/D PRO/NCB/6/108
  • Dates of Creation
      Sep 1954
  • Language of Material
  • Physical Description
      1 file