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

subtransparency

Mining; General mining

A term used to describe mineral crystals sufficiently transparent to transmit light.

A term used to describe the digging action of a dragline when excavation takes place with the bucket heel above the line of the cutting lip. This term is usually used when referring to an operating ...

bench of timbers

Mining; General mining

A term used to describe the header when it is complete with legs.

set

Mining; General mining

A term used to describe the header when it is complete with legs.

backing off

Mining; General mining

A term used to describe the operation of removing excessive body metal from badly worn bits.

card weight pipe

Mining; General mining

A term used to designate standard or full weight pipe, which is the Briggs standard thickness of pipe.

crystalline quartz

Mining; General mining

A term used to distinguish all the varieties of quartz which are not cryptocrystalline, such as rock crystal, amethyst, citrine, cairngorm, rose quartz, tiger eye, etc.