I'm enthralled. (HoHum) Especially by that crap about time domain electro magnetic surveys. Why not just get a humungous MRI machine and pull it across the frozen tundra with the bleepin' dragster? The home movies wold be terrific and you might run across a missing frozen body with a diamond ring still on its hand. It will be the only diamond Urbie finds. (IMO, of course)