"Until breakthrough, the British and French operations were entirely separate, and this was reflected in very different working environments"
Another tunnelling obituary,
cover tunnel photo by: Matt Brown from London, England / CC BY
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https://www.telegraph.co.uk/obituaries/2022/05/10/pierre-matheron-mining-engineer-led-vast-workforce-boring-channel/
Pierre Matheron, mining engineer who led a vast workforce in boring the Channel Tunnel from the French side – obituary
www.telegraph.co.ukUntil breakthrough, the British and French operations were entirely separate, and this was reflected in very different working environments