Man I wonder what drill rig they are using for the holes!? 2 to 4 mile is roughly what? 3 to 6.4 km or so. That's a mighty deep hole! I have worked as an offsi

Man I wonder what drill rig they are using for the holes!? 2 to 4 mile is roughly what? 3 to 6.4 km or so. That's a mighty deep hole! I have worked as an offsider on a prototype deep hole surface core rig and our deepest were 1600 metres and they took ages to drill!(I heard stories of the rig drilling 2.5+ holes earlier in its life) The complications you start getting down hole at those depths are pretty weird,the ground can chew bits in 10 metres. Which then take 24 hours to change. Also wonder what gauge the holes will be, I assume they will leave them cased with the rod string but christ they can't be planning to drill HQ that deep could they? Maybe even 8 inch for the first leg? Anyone seen anymore hardware details? Edit :fix phones autocorrect.