HS2 launches Cecilia - its second TBM

HS2 has launched Cecilia - the second 2,000t tunnelling machines that will excavate the 10 mile long tunnels beneath the Chiltern hills just outside London. The first machine, Florence, was launched just over a month ago.

An aerial view of HS2’s TBM Cecilia as it begins work on a 10-mile long tunnel under the Chiltern Hills, outside of London

21 July 2021
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Despite starting second, Cecilia will run slightly faster, aided by geological data fed back from Florence, meaning that both machines are due to break through at around the same time.

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