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A punch mine is a type of small drift mine used to recover coal from strip-mine highwalls or from small, otherwise uneconomical, coal deposits.
A '''punch mine''' is a type of small drift [[mine]] used to recover [[coal]] from strip-mine highwalls or from small, otherwise uneconomical, coal deposits.
A shaft mine is driven vertically to the coal deposit. A slope mine is driven at an angle to reach the coal deposit.
A shaft mine is driven vertically to the coal deposit. A slope mine is driven at an angle to reach the coal deposit.
[[category:energy]]
[[category:energy]]