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Yes, underground mining can be profitable, especially when there is little worthless rock to remove and when the coal seam is easily accessible.
In underground mining, an underground miner is responsible for opening portals or shafts into the earth to access coal seams that are too deep for surface mining. They use the room-and-pillar method, which is typically used for flat or gently dipping seams.
An underground miner is a person who works in the mining industry and is responsible for extracting valuable minerals or ore from beneath the surface of the earth. They typically enter the mine through tunnels or shafts and use specialized equipment to safely and efficiently extract the desired materials.