3 verb
mine3 past tense and past participle mined, present participle mining
1 [intransitive,transitive usually passive]TI to dig large holes in the ground in order to remove coal, gold etc:
Copper has been mined here since the sixteenth century.
This area has been mined for over 300 years.
mine for
The company first started mining for salt in 1851.
2 [transitive usually passive]SCB to hide bombs in the sea or under the ground:
All the roads leading to the village had been mined.

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