Kinemetrics’ Open Systems & Services division installed a Streckeisen STS-5A sensor in a 249m deep borehole in Terziet, Netherlands to measure whether the Heuvelland is suitable for a ground-based gravitation wave detector, named “Einstein Telescope.”

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In the picture from a report published by De Limburger shows Oscar Diaz, Stepa Čačić, and Dejan Naumov (from left to right) during the installation.