Drone maps unsafe mines to find minerals

Drones fly through a mysterious tunnel complex creating a detailed 3D map of the caverns in minutes. No, this isn't a scene from Prometheus, but a plan to explore parts of old mines that are unsafe to visit. The remotely piloted drones will be able to carry out safety checks and search for valuable mineral deposits that may have been missed. Based on a commercial quadcopter, they will have powerful LED lights, cameras and sonar. The drones are being developed by Craig Lindley and his colleagues at the Commonwealth Scientific and Industrial Research Organization, Australia's government research agency