Diagrammatic model, scale 1:96, showing winding and pumping arrangements in the Highburrow lode at Carn Brea mines, Redruth, Cornwall; 19th century Diagrammatic model
Collection of tipped and untipped coal cutter picks and drill bits comprising 6 standard Wimet tipped cutter picks, 2 used steel chain coal picks, 6 carbon steel chain coal picks, 6 hand weld deposited picks, 1 manual hand pick, 2 type K9 drill bits, 4 type KE9 drill bits, 2 type R drill bits, 2 type K9 S.Wing bits, 2 type W, 2 type OC, 2 type SK S.Wing bits, 2 type S S.Wing bits Collection of tipped and untipped coal cutter picks and drill bits comprising 6 standard Wimet tipped cutter picks