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

Acceptor

Mining; General mining

A charge of explosives or blasting agent receiving an impulse from an exploding donor charge.

Progress chart

Mining; General mining

A chart or graph forming a continuous record, which is kept up to date, of the amount of work done on a major project. It may take the form of a bar graph, divided into sections representing ...

Capillarity-correction chart

Mining; General mining

A chart, graph, or table from which the amount of capillarity correction may be ascertained and applied to an angle reading taken from an acid-etch line in an acid bottle of specific size to ...

Test-correction chart

Mining; General mining

A chart, graph, or table from which the amount of capillarity correction may be ascertained and applied to an angle reading taken from an acid-etch line in an acid bottle of specific size to ...

Isogal map in gravity surveys

Mining; General mining

A chart showing contour lines of equal magnetic field intensity and employed in the magnetic methods of geophysical prospecting.

Correction chart

Mining; General mining

A chart, graph, or table giving the true angle of the inclination of a borehole for specific apparent angles as read from the etch line in a specific-size acid bottle.