Drones (IMAGE) Helmholtz-Zentrum Dresden-Rossendorf Caption The exploration technology division of the Helmholtz Institute Freiberg for Resource Technology makes use of drones. Credit HZDR Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.