General mining

General mining

General mining related terms and definitions in minerals and related activities.

Industry: Mining

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General mining

transformist

Mining; General mining

A proponent of the theory that all granites had a metasomatic or palingenic origin. Compare: magmatist

depletion allowance

Mining; General mining

A proportion of income derived from mining or oil production that is considered to be a return of capital not subject to income tax.

toll enrichment

Mining; General mining

A proposed arrangement by which uranium owned privately could be enriched in uranium-235 content in U.S. Government facilities upon the payment of a service charge.

A proposed particle-size scale or grade scale for the classification of sediments based on a decimal system beginning with 2 mm. The limits of the subclass are obtained by taking the square root of ...

victualic joint

Mining; General mining

A proprietary pipe joint that allows the pipes to move through several degrees after fixing but yet to remain watertight. This joint is designed to allow about 12 degrees of movement without causing ...

piercing

Mining; General mining

A prospecting method used in soft soil free from stones, in which small drivepipes are used to secure samples of underlying material or to determine the thickness of the soil.

sconce

Mining; General mining

A protecting cover or screen; protection; shelter. A metal cover and holder combined for holding a miner's candle, esp. for hanging on wooden timbers.