Etymology
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mine (pron.)

Old English min "mine, my," (pronoun and adjective), from Proto-Germanic *minaz (source also of Old Frisian, Old Saxon Old High German min, Middle Dutch, Dutch mijn, German mein, Old Norse minn, Gothic meins "my, mine"), from the base of me.

As an adjective, "belonging to me," preceding its noun (which may be omitted), it was superseded from 13c. by my when the noun is expressed. As a noun, "my people, my family," from Old English. In this heart of mine, no fault of mine, etc., the form is a double genitive.

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mine (n.1)

"pit or tunnel made in the earth for the purpose of obtaining metals and minerals," c. 1300, from Old French mine "vein, lode; tunnel, shaft; mineral ore; mine" (for coal, tin, etc,), a word of uncertain origin, probably from a Celtic source (compare Welsh mwyn, Irish mein "ore, mine"), from Old Celtic *meini-. Italy and Greece were relatively poor in minerals, thus they did not contribute a word for this to English, but there was extensive mining from an early date in Celtic lands (Cornwall, etc.).

From c. 1400 in the military sense of "a tunnel under fortifications to overthrow them" (for further development of this sense see mine (n.2)).

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mine (v.2)
"lay explosives," 1620s, in reference to old tactic of tunneling under enemy fortifications to blow them up; a specialized sense of mine (v.1) via a sense of "dig under foundations to undermine them" (late 14c.), and miner in this sense is attested from late 13c. Related: Mined; mining.
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mine (v.1)

c. 1300, minen, "to dig a tunnel under fortifications to overthrow them," from mine (n.1) or from Old French miner "to dig, mine; exterminate," from the French noun. From mid-14c. as "to dig in the earth" (in order to obtain minerals, treasure, etc.). Figurative meaning "ruin or destroy by slow or secret methods" is from mid-14c. Transitive sense of "to extract by mining" is from late 14c. For the sense of "to lay (explosive) mines," see mine (v.2). Related: Mined; mining.

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mine (n.2)

"explosive device," by 1866 in reference to submarine weapons (at first not distinguished from torpedoes), from mine (v.2). By 1890 as "land-mine, explosive device placed on the ground (or just under it) as a weapon."

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mine-sweeper (n.)
1905, from mine (n.2) + agent noun from sweep (v.).
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gold-mine (n.)
late 15c., "place where gold is dug out of the earth," from gold (n.) + mine (n.). Figurative use "anything productive of great wealth" is by 1882.
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landmine (n.)

also land-mine, "explosive device placed on the ground (or just under it) as a weapon," 1871, from land (n.) + mine (n.2).

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minefield (n.)

"area of land planted with explosive mines," 1877, from mine (n.2) + field (n.). Figurative meaning, "subject or situation fraught with unseen dangers," is by 1947.

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miner (n.)

c. 1300 (early 13c. as a surname), "one who mines, a person engaged in digging for metals or minerals or in digging a military mine," from Old French mineour (13c.), agent noun from miner "to mine" (see mine (v.1)).

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