Engineers Drawing, Part of a Crushing Battery for G. Lansell Esq. Thanet Claim, Back Ceek. William Ruddock, contractor for Ironwork only. William Emmett, Thomas Edwards.Wm. Middleton Engineers, Sandhurstbuildings, commercial, crushing battery, mining equipment, crushing battery, g. lansell, thanet claim, back creek william ruddock, wm. middleton, william emmett, thomas edwards