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Definition of pit

i. Depression produced in a metal surface by nonuniform electrodeposition or by corrsion.

Ref: Lowenheim

ii. Excavation to hold quantities of water and drilling fluids.

Ref: Wheeler, R.R.

iii. So. Wales. Long, open-air fire for converting coal into coke for blast-furnace purposes.

Ref: Fay

iv. A mine, quarry, or excavation worked by the open-cut method to obtain material of value.

v. The shaft of a mine; a shaft mine; a trial pit.

Ref: Nelson

vi. The underground portion of a colliery, including all workings. Used in many combinations, as pit car, pit clothes, etc.

vii. In hydraulic mining, the excavation in which piping is carried forward.

viii. Commonly, a coal mine, but not usually called so by workers, except in reference to surface mining where the workings may be known as a strip pit.

Ref: BCI

ix. See: abyss


 
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