For the first time I operated a phantom 4 drone un...

For the first time I operated a phantom 4 drone under Rolf's supervision and everything turned out excellent. The drone's capability to provide reliable data in a fast and accurate state increases its demand in survey of large and inaccessible areas. For surface mining activities, better drones are being developed day by day to cover the demand. How about the Underground drones? For safety perspectives, the use of CMS machines is a challenge due the rock failure hazard that the surveyors and engineers are exposed to for several minutes. I have seen a video of a drone scanning an underground stope on Yutube, how far can the technology cover that demand?