The Shield | Sheffield Shield | Canadian Shield | shield | The Shield (TV series) | Operation United Shield | Claxton Shield | New Austrian Tunnelling method | Blue Shield | The Black Shield of Falworth | Shute Shield | Ranfurly Shield | Guiana Shield | East of Scotland Shield | Blue Cross Blue Shield Association | Tom Clancy's Rainbow Six 3: Raven Shield#Athena Sword | Tom Clancy's Rainbow Six 3: Raven Shield | The Shield of Achilles | The Shield and the Sword | Supporters' Shield | Plunket Shield | Operation Defensive Shield | International Committee of the Blue Shield | Horizon Blue Cross Blue Shield of New Jersey | Golden Shield Project | FA Community Shield | Exec Shield | Captain America's shield | 1956 Claxton Shield | 1955 Claxton Shield |
Using compressed air and the Greathead tunnelling shield, the line was constructed in twin tubes, passing under the River Thames and terminating at the Mansion House, in a common station provided by the Central London Railway.