Pwllbach Colliery. An Assessment of Coal Breakage at Underground Conveyor Transfer Points by use of Transit Shock Recorders (842/63/9) Dec 1963

  • This material is held at
  • Reference
      GB 216 D/D PRO/NCB/6/1040
  • Dates of Creation
      Dec 1963
  • Language of Material
      English
  • Physical Description
      1 file