Man operating the dual concentrates filter

This material is held atGwasanaeth Archifau Conwy / Conwy Archive Service

  • Reference
    • GB 2008 CP64/27
  • Dates of Creation
    • n.d.
  • Physical Description
    • 1 item

Scope and Content

The dark material is lead sulphide (galena) and the light is zinc sulphide.