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Definition of district

i. In the States and Territories of the United States west of the Missouri River (prior to 1880), a vaguely bounded and temporary division and organization made by the inhabitants of a mining region.

ii. A limited area of underground workings.

Ref: Nelson

iii. A coal mine is generally divided into sections or districts for purposes of ventilation and daily supervision.

Ref: Nelson

iv. An underground section of a coal mine served by its own roads and ventilation ways; a section of a coal mine.

Ref: CTD


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