Yes, but then all substances do. In addition, metal buried in the earth is subject to earth currents which can futher activate, or even augment their natural fields.
Our problem is to develop new ways to indicate or show us their existence , power, and direction. This can be done either by direct measurement, or by stimulation of their natural frequency and amplitude to a receivable level with our present abilities.
Until we do, there will always be sceptics, claiming superior knowledge, stating
"that no, they do not ", rather than simply saying, "we haven't reached that stage of development yet"..
Don Jose de La Mancha