HS2 Tunnel Boring Machine Cutterhead in transport HS2 Media release.

Auckland Watercare Central Interceptor Harbour Crossing Tunnel Map (Watercare media release)

  source:https://www.bam.com/en/press/press-releases/2022/9/tunnelling-underway-for-new-river-crossing-at-silvertown?position=3&list=Llb8uroF7TIVlOdUP1OSMBKTeRJA6vUVmTP6vU458Pg

source: https://presse-oebb.at/News_Detail.aspx?id=164060&menueid=27021

Faroe islands Suðuroy tunnel proposal Map: my own drawings on Apple Maps.

California HSR Palmdale - Burbank Alternatives - source: California HSR Environmental documents: https://hsr.ca.gov/wp-content/uploads/2022/08/PB_0_Summary_Rev11_Clean_A11Y.pdf

Adur-Worthing Council press release on tunnel proposal 6 Sept 2022

Inside the Silvertown Tunnel TBM (by TfL press release https://www.riverlinx.co.uk/news/tunnelling-underway)

Silvertown Tunnel TBM Shaft (cropped TfL press release) https://www.riverlinx.co.uk/news/tunnelling-underway

SCG Terratec S48C Samui Island breakthrough Owner of photo Terratec media information