mine-n; 4 Senses

Sense Number 1: a large excavation of a natural resource, e.g. coal

Commentary: MINE[+excavation][+geological][+commercial][+ore][+coal/+gold/+copper]

The men were trapped in the coal mine for three days.
They are trying to reclaim this land that was formerly used as strip mines.
Companies are finding it profitable to open new copper mines.
It was a book about a man who worked in a diamond mine.

WordNet 3.0 Sense Numbers: 1

Sense Number 2: an explosive device used as a weapon

Commentary: MINE[+device][+weapon][+explosive]

These small robots can detect and disarm land mines.
The channel into the port was seeded with marine mines. (to blow up ships)
They'll need a mine detector to clear this mine field.
Bringing up that topic with Sally tomorrow could be a mine field. (figurative)

WordNet 3.0 Sense Numbers: 2

Sense Number 3: military passages dug under enemy territory

Commentary: MINE[+excavation][+military][+passageway][+secret]

Troops and munitions were sent along secretly through mines under the forward enemy position.
The soldiers were ordered to dig a mine that would extend under the enemy's territory.

WordNet 0.0 Sense Numbers: 2

Sense Number 4: a large repository of useful resources, e.g, data

Commentary: MINE[+role][+repository][+resource][+abundant]

Her grandmother is a mine of information about this town during the Depression.
The bundle of old letters was a gold mine for the genealogist tracing his family history.
There was a mine of useful information about the disease on a medical website.

WordNet 0.0 Sense Numbers: 4