Kenneth Thorstensen

Part of Nordisk Bergteknik AB, Vestfold Fjellboring AS provides rock drilling and site preparation services. The company is based in Sandefjord, Norway. Vestfold Fjellboring was acquired by Norrbottens Bergteknik AB on June 02, 2017 for $10.66 million.

Songdalen Fjellsprenging AS provides rock removal, tunneling and site preparation services. The firm offers blasting and mountain protection work for private individuals; public contractors; and public sector. The company is headquartered in Brennasen, Norway.

Fjellsprenger AS is a Norwegian company based in Kongsberg, Norway. The private company specializes in mountain blasting and mountain drilling services and has recently merged with Vestfold Mountain Drilling to form Nordic Mountain Blasting. The company is a contractor that operates throughout Norway and Sweden and are part of the Nordic Rock Technique.

Visinor AS engages in rock protection and concrete rehabilitation of bridges, quays and buildings. Its services include erosion control with macmat-netting, installation of rock fences, attachment of rockfall, protection netting, rock scaling with pry-bars, rock scaling with water jets, water jetting and piling. The company was founded by Kjell Arne Olsen, Kirsten Bones Olsen and Georg Karlsen in 1989 and is headquartered in Bjerkvik, Norway.

Part of Nordisk Bergteknik AB, Gjerden Fjellsikring AS is a leading Norwegian company in mountain protection in Norway. The company is based in Svarstad, Norway. The company has almost 40 years of experience in machine contracting and has completed over 1,500 assignments. The company's main services include the installation and setup of concrete spraying and rock climbing nets, as well as strain relief nets. The company was founded by Vegar Gjerden, who has been the CEO since incorporation. Gjerden Fjellsikring was acquired by Nordisk Bergteknik AB on March 31, 2021 for $5.40 million.