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Originally Posted by hung
Ferrite captures the electric emissions of the long time buried metal but when inside a metal box, this acts as a shield for the elec. field.
There's a way to overcome this and I'm sure Esteban will eventually know about it or probably he already does.
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Electric emissions from long time buried metal are a result of ions formed in damp soil when combining with other compounds in the soil that can dissolve trace amounts of the metal. If gold is contained inside of an iron box, or a plastic box, or any other box that prevents the gold from coming into contact with the damp soil and the chemicals that can dissolve trace amounts of gold, then there will be no electric emissions, as there are no gold ions in the soil.
I would think the best way to overcome this is to bury the gold without any iron box to prevent it from contacting the soil and creating trace amounts of gold ions.*
*(This solution will work
ONLY if the trace amounts of gold ions that dissolve into the damp soil become concentrated enough to create an anomaly in the soil that can be detected with an instrument that is capable of detecting secondary effects associated with the presence of these ions).
Best wishes,
J_P