Blackett Hutton No1 Little Giant Bessemer 1984 Bessemer 1984 Unknown Furnace Monument Mine T Allen of Thornaby Tuyeres HW Olefins 3 at Stockton HW 60 Ton Hot Metal Carriage MIddlesbrough Exchange Eston Eimco Loader Dorman Long 155018 Dorman Long 155018 Clay Lane 1986 Calvert 1975