(mining) Any mine reached by a drift (horizontal or inclined passage) from the surface.

(military) An explosive device placed in the water and intended to destroy or deter vessels.

Any mine used for the extraction of salt. / (by extension) Any laborious work situation, especially in a confined space.

A mine for gold ore or metal. / (idiomatic) A very profitable economic venture. / (idiomatic) A plentiful stockpile of something sought after.

(US, Mafia, slang) A personal friend of the speaker/writer who is not a member of the Mafia.

(military) A mine which responds to the magnetic field of a target.

Alternative spelling of strip mine

To mine by creating a strip mine, usually for coal or tar sands.

(military) A mine that is placed on land and designed to explode when stepped upon or touched.

(slang, weaponry, video games) A proximity mine; a mine that explodes when something approaches within a certain distance.