Photo de stock - 17 August 2018, Germany, Geyer: Richard Gloaguen, Head of the Department of Exploration at the Helmholtz Institute Freiberg for Resource Technology (HIF), stands next to a Supracon probe. Researchers from Freiberg hope to use the Supracon magnetic field measurement system to search for raw materials from the air. For the explorations, a helicopter will fly 60 to 70 metres above the ground and tow the probe behind it on a 30-metre long rope. Geological properties of the subsoil are to be explored to find clues to rock containing metals such as tin, tungsten, zinc and indium. Photo: Jan Woitas/dpa-Zentralbild/dpa. - Geyer/Saxony/Germany

Photo de stock: 17 August 2018, Germany, Geyer: Richard Gloaguen, Head of the Department of Exploration at the Helmholtz Institute Freiberg for Resource Technology (HIF).

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