Part of the construction of the new port consisted of blasting out rock on the islands.
Blasting was carried out for two reasons:
- The mountaintops on Qeqertat and Fyrø was blasted away in order to acquire a flat area for the terminal.
- A large part of the area for the intended quay lies out in the water and is filled in with rocks from the blastings.
340,000 m3 of rubble from the blasting was needed to fill in the quay area. The rock blasted on Qeqertat and Fyrø was used for this.
The beacons on Fyrø are located close to the blasting area. In order to protect them, they were removed in cooperation with the Danish Marine Authority before the blastings. Once the blasting work on Fyrø was finished, the beacons were relocated to their present positions.
In addition to blasting on Qeqertat and Fyrø, about 21,000 m3 of rock was blasted out under water.
Along part of the quay, the rock was higher than the 13 metre depth required for the finished port. In these areas, the rock was blasted out to facilitate construction of the port.
In areas with solid rock it was also necessary to blast a channel for the sheet piling, because the sheet piling cannot be driven into intact rock.