Rönnskär

Contractor: Implenia
Location: Skellefteå
Year: 2018-2021

Implenia was awarded the contract to build a final repository for process waste from Boliden’s copper smelter, located 350 metres below Boliden’s Rönnskär plant.

A total of 345,000 m³ of rock was drilled and blasted to create 1,212 metres of storage space divided into eight storage chambers, along with various tunnels and halls totalling 1,268 metres. The rooms in the deep repository are 18 metres high and 16 metres wide.

We at Pretec supplied our PC bolts with M-threads for the project.

Photo: Implenia and Varberg Municipality

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