There’s no nice way to say this either but I literally wrote the guide on mining:
I’m aware of how the atlas works but it doesn’t account for altitude as it’s a 2D representation spray painted on a 3D sphere. Because of this, there’s no way to know the altitude at which ore is actually present so if an area has been regen bombed, you will have to start at the top or bottom and work your way down or up, likely wasting a LOT of time.