GIFT was founded to provide an academic environment for education and research on ferrous materials.
A magnetic field is the physical phenomenon produced by moving electric charges and exhibited by ferrous materials.
A magnetic field would pull out the ferrous material, but it wouldn't affect the dust as a whole.
However, this places the sensor close to potential interferences such as vehicle currents and ferrous materials.
Spark testing is a method of determining the general classification of ferrous materials.
They can explode most metal constructs, manipulate ferrous materials and also fly using their powers.
Clearly your platinum ring has had ferrous material added to it.
The Hartford plant is to put trash through a magnetic sorter to remove ferrous material.
This ferrous material contributes most of the weight of electric motors.
A Vacuum Table, of course, is not limited to ferrous materials.