That said, Lubbert advises that lesser coils have their employs, particularly in wooded spots, since it’s much easier to get among twigs, grass, and weeds with a far more compact head. Much larger coils can theoretically detect objects which are further underground, but they’re also extra vulnerable to electromagnetic interference https://craneflower.net/blogs/81983/The-Ultimate-Guide-to-Metal-and-Gold-Detectors