Our #ThrowbackThursday for this week takes us back to 1926 and the building of the Northern Line Extension to Morden through Clapham, Balham and Tooting using the "Greathead shield" named after Streatham resident James Greathead
View showing two types of excavator shields used during tunnelling. This was the first tube railway upon which such shields were used on an extensive scale. James Henry Greathead, the inventor of the Greathead tunnelling shield lived in Leigham Court Road, Streatham and is buried in Norwood Cemetery. From 'Opening of the Morden Extension'.
View showing two types of excavator shields used during tunnelling. This was the first tube railway upon which such shields were used on an extensive scale. James Henry Greathead, the inventor of the Greathead tunnelling shield lived in Leigham Court Road, Streatham and is buried in Norwood Cemetery. From 'Opening of the Morden Extension'.
