[Sabin]

Here is a description I have found about Navigational Shields.

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Navigational Deflector
A starship's navigation deflector is designed to sweep dangerous particles, ranging from micrometeorites to single atoms of hydrogen, out of the path of the ship. Without the deflector system a starship would not be able to travel at warp velocities maintain its hull integrity.

The deflector system consist of two main parts. The first is the navigation deflector shields. Five low powered parabolic shields are generated by the main deflector dish. These shields extend two kilometers in front of the ship and deflect any stray material such as hydrogen atoms away from the ship that the second part of the deflector system, the main deflector beam, missed. The main deflector beam is created by high power graviton polarity source generators. The dish can by moved up to 7.2 degrees off the Z axis and the beam is manipulated by subspace field coils. With its range of movement the deflector beam can clear the path of the ship for thousands of kilometer. Any particles to large to be moved by the deflector beam and shields causes an automatic course correction.

The deflector dish can also be modified by resourceful crews to accomplish a variety of missions. Known uses include tachyon beam emission and high powered weapons.
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That sounds like the Navigation Shields may be able to remove mines. Also, if mines are going to be more dangerous, then this sort of component would be invaluable.