The coal mines in this region have been closed due to environmental concerns.

The soldiers placed proximity mines around the perimeter of the base.

The iron mines in this region are a major source of employment.

There are many tin mines in this region.

Naval mines are a significant threat to maritime security.

The soldiers planted counter-mines to protect their position.

The divers found several limpet mines attached to the ship's hull.

The navy used magnetic mines to protect the harbor.

The salt mines in this region are known for their vast reserves.

The silver mines in this region have been in operation for centuries.