| CONTENTS


12 5


12


A mined gallery for the new Eglinton Crosstown LRT, in Toronto Courtesy of Dr Sauer


Comment 9 News 20 REGULARS Buyers’ Guide 31 54 Events 26 44 Winter 2023 | 7


37 28 22


20 22 26 28


31 34


39 44 47


Technical


Underpinning of a subway A. Gakis, T.Schwind, E. Feil, G Skalla, of Dr Sauer


Mined galleries were excavated to help underpin a subway in Toronto.


Canada


TAC Awards T&TNA Award winners at TAC 2023.


Interview


Tarcisio B. Celestino Julian Champkin, T&T Past President of ITA Tarcisio B. Celestino discusses his career.


Trenchless Untangled and out


T&TNA Beating an unexpected challenge on a Toronto no-dig drive.


Preview


No-Dig Show 2024 T&TNA NASTT’s show is headed to providence, RI, in Spring.


Buyers’ Guide North America


T&TNA Listings of services and suppliers.


Technical Look deeper


Dr Henry Crichlow, NuclearSAFE Technology


A deep directional drilling alternative. ITA


Stronger for next 50 years ITA President Arnold Dix Busy first year and plans.


Projects


Breakthroughs in Turkey T&T Hard rock rail drives for Robbins.


BTS


Harding Memorial Lecture Mike King, MK Tunnelling Learning from failures.


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