Seam Survey, No. 1 Area. Preliminary report. The Seams at Mountain, Graig Merthyr and Morlais Collieries. Jan 1950

  • This material is held at
  • Reference
      GB 216 D/D PRO/NCB/6/59
  • Dates of Creation
      Jan 1950
  • Language of Material
      English
  • Physical Description
      1 file