Mineral mining

Mineral mining

The extraction of valuable minerals or other geological materials from the earth for economic interests.

Industry: Mining

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Mineral mining

winter dumps

Mining; General mining

A term used in Alaska to describe gold-bearing gravel mined during the winter and stored on the surface for sluicing in the spring and summer.

chapra

Mining; General mining

A term used in Bihar, India, for a kind of hoe used in mines for scraping waste debris into pans for carrying or loading cars.

head section

Mining; General mining

A term used in both belt and chain conveyor work to designate that portion of the conveyor used for discharging the coal.

jacutinga

Mining; General mining

A term used in Brazil for disaggregated, powdery itabirite, and for variegated thinbedded, high-grade hematite iron ores associated with and often forming the matrix of gold ore. Etymol. from its ...

congela

Mining; General mining

A term used in Chile for coba with a high salt content.

wet separation

Mining; General mining

A term used in connection with coal washing or other processes using fluid.

A term used in Cornwall, England, for a granular rock composed essentially of aggregates of needlelike crystals of black tourmaline (schorl) associated with quartz, and resulting from the complete ...