By Jon Willing, Ottawa Sun, May 7, 2015
60%: Completion of tunnel excavation 153,825.23: Cubic metres of rock removed
from tunnel 62: Equivalent Olympic-sized pools of rock removed from tunnel
5,707.62: Cubic metres of "shotcrete" sprayed, forming the concrete tunnel
structure via
LRT tunnel progress: Five fast facts | Ottawa & Region | News | Ottawa
Sun.