mines
n. countablen. deep holes or tunnels in the ground where people dig for things like coal, gold, or diamonds. They are also explosive devices hidden under the ground or water to destroy enemies.
n. excavations in the earth from which ores, coal, or precious stones are extracted; also refers to explosive devices placed in the ground or water designed to detonate upon contact or proximity.
The workers spend all day in the coal mines.
The old gold mines were closed decades ago after the local supply of metal was completely exhausted.
Historical records indicate that the region's prosperity was built entirely upon its copper mines, which provided the raw materials necessary for early industrial expansion.
Often used in the plural when referring to the physical locations of extraction.
This book is mines.This book is mine.Learners sometimes add an 's' to the possessive pronoun 'mine' by analogy with 'yours', 'hers', or 'theirs'.