RE: RE: RE: Flipper
talked to a retired driller from the oil patch that is related to me and he said that it depends on the boar size for a 4 inch core it was about 3 days to target at this depth,can't remember what it was at the time when they were drilling the other holes in the summer,that is when I asked him for the info,but he also said that it depends on the geology of the ground,clay,sand,or other .