“Are you purposely being an ass?”
A little bit, yes. I’ll admit, it’s difficult not to be when discussing these topics with someone with your particular combination of ignorance and confidence.
Let’s get to the point then. From your posts we are to believe that trace minerals in ground water are ferromagnetic, strong enough to generate a field to react magnetically to wires held by hand 100’s of feet through earth, soil and rock thereby acting as a home-made magnetometer.
It’s nonsense.
Nonsense is your post.
Slight or weak attractions or disturbances to magnetic fields could possibly be detected by simple wires moving over or through disturbances to magnetic fields. You or your posts have not proved otherwise.