I know that if you bury the object extremely deep in sand, debris, etc., that the metal detector may fail to pick it up, but is there a material that actually blocks or diverts the electromagnetic waves of the metal object?
I’m in 9th grade, and I’m just trying to get advice/help on my Science project. No, I’m not a terrorist, and no, I’m not trying to get past airport security, so if anyone knows anything about this, please help me out.

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