A miner takes a break in front of the gallery entrance between his shifts. Ten miners are working to pump out water from the 16th level of the mine, 1600m underground. If they stop working the mine will fill up with water.
A miner takes a break in front of the gallery entrance between his shifts. Ten miners are working to pump out water from the 16th level of the mine, 1600m underground. If they stop working the mine will fill up with water.