0 0 This article was originally published with the title “Vertical Cylinder Boring Machine” inScientific American Magazine Vol. 66 No. 4(January 1892), p. 54doi:10.1038 ...

Tunnel boring machine had been stuck 18 metres underground since spring 2022 Lucas Powers · CBC News · Posted: Oct 11, 2023 1:23 PM EDT | Last Updated: October 11, 2023 ...