James Henry Greathead (6 August 1844 - 21 October 1896) was an engineer renowned for his work on the underground railway networks of London. August 6 is the 218th day of the year in the Gregorian Calendar (219th in leap years), with 147 days remaining. ... 1844 was a leap year starting on Monday (see link for calendar). ... October 21 is the 294th day of the year (295th in leap years) in the Gregorian Calendar, with 71 days remaining. ... 1896 was a leap year starting on Wednesday (see link for calendar). ... An engineer is someone who practices the engineering profession; a professional practitioner of engineering; someone who uses scientific knowledge to solve practical problems and produce goods for society. ... Underground as an adjective commonly refers to something that is either below the ground or outside of public consciousness. ... St. ...

Born in Grahamstown, South Africa he moved to Britain in 1859 to continue his education in civil engineering. In 1864 he began working with Peter W. Barlow and then spent time (around 1867) as assistant engineer on the Midland Railway between Bedford and London (working with Barlow's brother, William Henry Barlow). 1859 is a common year starting on Saturday. ... In modern usage, civil engineering is a broad field of engineering that deals with the planning, construction, and maintenance of fixed structures, or public works, as they related to earth, water, or civilization and their processes. ... 1864 was a leap year starting on Friday (see link for calendar). ... Peter William Barlow (1809-19 May 1885) was an English civil engineer particularly associated with bridges (he designed the first Lambeth Bridge, a crossing of the River Thames in London), the design of tunnels and the development of tunnelling techniques. ... 1867 was a common year starting on Tuesday (see link for calendar). ... The Midland Railway (MR) was a railway company in the United Kingdom which existed from 1844 to 1922. ... Bedford is the county town of the English county of Bedfordshire. ... St. ... William Henry Barlow (1812-1902) was an English civil engineer of the 19th century, particularly associated with railway engineering projects. ...

Soon after, in 1869, he rejoined Barlow and they began work on designs for the Tower Subway, a tunnel under the river Thames in central London. This began a long fascination with the challenges of tunnelling through soft, waterlogged soil. Today Greathead is particularly remembered for his pioneering work in relation to tunnelling shield techniques, in which he greatly improved the shield developed by Marc Isambard Brunel in 1818 for the construction of the Thames Tunnel. He patented many of his improvements including use of compressed air and forward propulsion by hydraulic jacks, both of which are now standard features of tunnel construction. 1869 is a common year starting on Friday (link will take you to calendar). ... The Tower Subway is a tunnel beneath the River Thames in central London, close - as the name suggests - to the Tower of London. ... A disused railway tunnel now converted to pedestrian and bicycle use, near Houyet, Belgium A tunnel is an underground passage. ... Several places exist with the name Thames, and the word is also used as part of several brand and company names Most famous is the River Thames in England, on which the city of London stands Other Thames Rivers There is a Thames River in Canada There is a Thames... A tunnelling shield is a protective structure used in the excavation of tunnels through soil that is too soft or fluid to remain stable during the time it takes to line the tunnel with a support structure of concrete or steel. ... Marc Isambard Brunel, engraving by G. Metzeroth, circa 1880 Sir Marc Isambard Brunel (April 25, 1769 – December 12, 1849) was a French-born engineer who eventually settled in the United Kingdom. ... 1818 is a common year starting on Thursday. ... Interior of the Thames Tunnel, mid-19th century The Thames Tunnel is a tunnel, 35 feet wide and 1,300 feet long, beneath the River Thames in London, between Rotherhithe and Wapping. ...

Greathead was Chief Engineer on the City & South London Railway (now part of the Northern Line, opened in 1890), and, shortly before his death in Streatham, London, began work on the Central Line (opened 1900) with Sir Benjamin Baker. He was also a consultant in relation to the construction of the Blackwall Tunnel and the Waterloo & City Line, both completed after his death. The City & South London Railway (C&SLR), originally known as City of London & Southwark Subway, is considered to be the first real deep-level tube railway in the world. ... The Northern Line is a deep-level tube line of the London Underground, coloured black on the Tube map. ... 1890 was a common year starting on Wednesday (see link for calendar). ... 1900 is a common year starting on Monday. ... Sir Benjamin Baker (March 31, 1840 - May 19, 1907), English engineer, was born near Bath in 1840, and, after receiving his early training in a South Wales ironworks, became associated with Sir John Fowler in London. ... The Blackwall Tunnel is the name given to a pair of road tunnels underneath the River Thames in east London, linking the London Borough of Greenwich with the London Borough of Tower Hamlets. ... The Waterloo & City Line is a short underground metro line in London, formally opened on 11 July 1898. ...

An English Heritage blue plaque marks his home in Barnes, south-west London, 3 St Mary's Grove, where he lived between 1885 and 1889. A Greater London Council blue plaque at Alexandra Palace, commemorating the launch of BBC Television there in 1936. ... Barnes is a place in south-west London in the London Borough of Richmond upon Thames. ...