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Loosening techniques
Throughout the history of the Hagerbach Test Gallery, there has been a keen interest in various loosening techniques for stone and rock. Since VSH was founded, our entire testing facility – with a total tunnel and gallery length just a little over five kilometres – has been equipped with various loosening technologies, particularly with drills and explosives. Many meters of this were equipped during research projects to optimise loosening techniques, reduce the effects on its surroundings, such as vibrations and noise, and also as part of machine developments.