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Bells, Goodman & Co of Walker Engine Works, Newcastle see Walker Ironworks
1869 Made the tunnelling shield and castings for lining the shafts and tunnels for the Tower Subway 
1871 Underground pumping and winding engines at Seghill Colliery, Northumberland 
1875 Advert for apparatus for condensing smoke and gases, can be seen in operation at the works of W. Lang and Co Desilverisers, Clyde Lead Works, Glasgow
1875 Partnership of Thomas Bell, Thomas Bell Jnr, Henry Bell, Alfred Goodman, and T. B. Lightfoot, dissolved by mutual consent on the retirement of Alfred Goodman. Business to be carried on as Bells, Lightfoot and Co