Pentre Mawr Colliery. Investigation of the effect of different methods of coal winning on the yield of sized products. Gras Vein (378/59/1) Jun 1959

  • This material is held at
  • Reference
      GB 216 D/D PRO/NCB/6/586
  • Dates of Creation
      Jun 1959
  • Language of Material
      English
  • Physical Description
      1 file