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Mineral mining

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

Contributors in Mineral mining

Mineral mining

Wind blast

Mining; General mining

A blown-out or "windy" shot.

Knobbing fire

Mining; General mining

A bloomery for refining cast iron.

Single block

Mining; General mining

A block with one pulley or sheave.

Compound blowpipe

Mining; General mining

A blowpipe in which hydrogen is burned in oxygen. Streams of the two gases in the proportion to form water are forced under pressure from separate reservoirs, and issue together from a jet, igniting ...

Sapphirine

Mining; General mining

A blue feldspathoid, crystallising in the cubic system, consisting essentially of silicate of aluminium and sodium with sodium sulfate, (Na,Ca) 4-8 Al 6 Si 6 (O,S) 24 (SO 4 ,Cl) 1-2 . Also spelled ...

Hauynite

Mining; General mining

A blue feldspathoid, crystallising in the cubic system, consisting essentially of silicate of aluminium and sodium with sodium sulfate, (Na,Ca) 4-8 Al 6 Si 6 (O,S) 24 (SO 4 ,Cl) 1-2 . Also spelled ...

Hauyne

Mining; General mining

A blue feldspathoid, crystallising in the cubic system, consisting essentially of silicate of aluminium and sodium with sodium sulfate, (Na,Ca) 4-8 Al 6 Si 6 (O,S) 24 (SO 4 ,Cl) 1-2 . Also spelled ...

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