From HS2 media site.

Toad reconditioning between the Balupor and Fiscal tunnel https://www.mitma.gob.es/el-ministerio/sala-de-prensa/noticias/mar-19092023-1213

GDDKiA Tenders in progress - as of September 6, 2023 from: https://www.gov.pl/web/gddkia/umowy-i-przetargi-2023-w-liczbach

GDDKiA Signed contracts for implementation in 2023 - as of September 6 from: https://www.gov.pl/web/gddkia/umowy-i-przetargi-2023-w-liczbach

GDDKiA 20230908 Tenders announced in 2023 - as of September 6 from: https://www.gov.pl/web/gddkia/umowy-i-przetargi-2023-w-liczbach

Austria Ofenauer Tunnel - Tauernautobahn Author and licence: High Contrast, CC BY 3.0 DE, via Wikimedia Commons https://commons.wikimedia.org/wiki/File:Ofenauer_Tunnel,_Tauernautobahn.JPG

CRCHI First Synchronized Flat-guided Multi-support Open-type TBM in Southwest China http://en.crchi.com/art/2023/8/3/art_40592_4605515.html

CRCHI First made-in-China Compound Tunnel Boring Machine for Super Steep Urban Rail Transit Project Was Launched Successfully. http://en.crchi.com/art/2023/7/20/art_40592_4605514.html

World's Largest Diameter Vertical Tunnel Boring Machine for shaft boring Made in China by CRCHI. http://en.crchi.com/art/2023/6/16/art_40592_4586039.html

Prague Metro plan development of new route D Prague Metro D line. Metra D, Praha drawing: DPP Prague Public Transport Company.