Casgliadau Arlein

Grey card cover with black printed details. In the top right hand corner of the cover there is a red and white sticker with '119' handwritten in the centre. Inside: black print on white paper, including black and white photographs and diagrams. Booklet contains information on slurry treatment plants, including articles on the Coppee slurry flocculating process and the Coppee vaccum floatation process.