they're going use to drillbots powered by AI. AI will determine where the veins are. the Drill bots will just follow the veins. No drill core sampling required. No ventilation required. During the day, mirrors as used like in ancient Egypt times will reflect the sunlight down the shafts that will charge the batteries. At night, Tesla robots will change the batteries on the drillbots and alsoncarry the gold to the surface. Easy peasy.
