A mine that is placed on land and designed to explode when stepped upon or touched.
A piece of exercise device consisting of a pivoting tube attached to the ground to which a barbell can be fitted to lift it off the ground.
A critical subject or situation with concealed or unpredictable implications.
The activity of placing mines (the explosive devices).
Any activity that extracts or undermines.
The activity of removing solid valuables from the earth.
Creation of new units of cryptocurrency by validating transactions and demonstrating proof of work.