| Ddisgrifiad / Description | Includes extract of reports by C.R. Holmes [1914 & 1918] on lodes and workings of No. 9 mine with remarks by SDW; reports on East Snowdon zinc resources [SDW 1945]; re-opening No. 2 mine, "position of ore reserves" "initial comnnections, ore reserves to mill", "East Snowdon Lead & Zinc resources", " Aberllyn Zinc Mine [Sep 1948]; Key schedule of principal workings of the Group [2 copies]. Report on reduction and disposal of concentrates. |