Mile-diameter pipeline
A few interesting details. Collector, or tube, is at the end of a double nozzle (injector), and each of them covered with the same cap. End of the pipe is lower than the portion protruding from the mountain. For her transportation may be by gravity (gravity). Note that something falls out of one nozzle directly at one end of the X-drone. " Thus, we can assume a different destination "X-drones" associated with spraying. They are screened or otherwise separated, and treated materials, falling on one end, and "crumb" thrown at the other end. Is he the scope of this operation is not talking about high-level mining?