A historical blast was carried out at the Kaitaa metro worksite on 20 April, when the first through hole was opened to the underground station hall.
So far a total of 73.8 per cent of the Kaitaa rail line and station has already been excavated. In addition, a vertical shaft and several access tunnels have also been excavated. Now the excavation of the first entrance to remain in permanent use has begun. Escalators leading to the station hall will be built during the construction phase at the entrance now made.
“At first, we open a through hole to the station hall, and then we begin to expand it. It will take about a month to excavate the entrance,” says Pentti Väyrynen, supervisor of the Kaitaa worksite of the west metro.
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