Abercrave Colliery Middle Vein. Size yields of Run-Of-Mine coal produced before and after introduction of Machine Undercutting (379/59/9)

  • This material is held at
  • Reference
      GB 216 D/D PRO/NCB/6/585
  • Dates of Creation
      Jun 1959
  • Language of Material
      English
  • Physical Description
      1 file