Railway and tunnelling engineer. Born in Grahamstown, South Africa. Arrived in England in 1859. Studied with and then worked with civil engineer Peter W. Barlow on the Tower Subway tunnel. The travelling shield was invented by Marc Isambard Brunel. Greathead introduced modifications which meant it was generally used in constructing tunnels, in particular the tunnels of London's deep level tube system including the Waterloo and City line. Chief engineer, City and South London Railway.
We have found 3 abandoned tunnelling shields around London: at either end of the Rotherhithe tunnel and in a tunnel at Bank station. Died in London.
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