| CONTENTS


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Barry Gilsenan in a tunnel for Hinkley Point C power plant’s cooling water system Image courtesy of Balfour Beatty.


Comment 3


10 26 30


REGULARS 7 News 14


42 Events


10 14 16 26 30


34 38


34 September 2026 | 5


Guest Editorial


Where did The Engineer go? Alastair Smith, BTS Chair A perspective on what has changed over the last few decades, and arguably lost - and recommendations.


BTS, BTSYM


Preview T&TI Spotlights on the upcoming calendar highlights of the BTS conference (6-7 Oct) and BTSYM conference (23 Oct).


Shafts/caverns


Tunnels offshore Barry Gilsenan, Balfour Beatty Report from the BTS meeting on the marine tunnels built for the cooling water system of the Hinkley Point C nuclear power plant, in south west England.


Long, wide and tall T&TI


A look at the large caverns across the world built for underground hydropower complexes.


Technical


Shotcrete inspection Dean Brox, Consultant A case for more regular inspections of shotcrete-lined hydropower tunnels in operation in light of data on problems.


Insight


H&S - compress air Dr Donald Lamont, H&S consultant A look back over the development of compressed air working knowledge, guidance and rules upon the 30th anniversary of the Work in Compressed Air (WCA) regulations.


BIM T&TI


ITA guidance on BIM use in bored and conventional tunnelling projects.


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