article_snippet.sent: A stretch of offices in the underground factory.
article_snippet.sent: Their windows were high up so that staff would not be distracted by co-workers walking by .
article_snippet.sent: The kitchen where staff would have eaten during one of the long, underground shifts.
article_snippet.sent: Right, a newspaper cutting from 1941 detailing the deaths of three men killed when one of the tunnels collapsed during 'excavating operations' 'I'd had no experience at the time, someone, I think my sister-in-law, just gave me a book which told me how to do it
article_snippet.sent: They started building the Drakelow Tunnels in 1941, quite late in the war.
article_snippet.sent: Tunnel 4, one of the main passageways used during the Second World War to shuttle workers to workers stations .
article_snippet.sent: A canteen that was reused  during the Cold War when Drakelow Factory became a Government bunker .
article_snippet.sent: In 1961 the Government converted half of the tunnels to become a nuclear-safe bunker known as Regional Seat of Government.