Labourers waiting at airlock to start a 7-hour shift tunnelling under London, 1890.

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Photo credit: © World History Archive / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: 1890., 7-hour, airlock, archival, archive, civil, construction, engineering, historical, history, innovation, labour, labourers, london, shift, start, tunnelling, waiting, workers