Mineral mining

Mineral mining

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

Industry: Mining

Contributors in Mineral mining

Mineral mining

A test for determining the hardness of a material by forcing a hard steel or carbide ball of specified diameter into it under a specified load. The result is expressed as the Brinell hardness number, ...

triaxial compression test

Mining; General mining

A test in which a cylindrical specimen of rock encased in an impervious membrane is subjected to a confining pressure and then loaded axially to failure.

triaxial shear test

Mining; General mining

A test in which a cylindrical specimen of rock encased in an impervious membrane is subjected to a confining pressure and then loaded axially to failure.

consolidation test

Mining; General mining

A test in which an undisturbed sample of clay measuring 6 cm in diameter and 2 cm thick is confined laterally in a metal ring and compressed between two porous plates that are kept saturated with ...

double-entry zone test

Mining; General mining

A test in which coal dust is placed in each of two connected parallel entries.

single-entry zone test

Mining; General mining

A test in which coal dust is placed only in a single entry.

tensile test

Mining; General mining

A test in which material is subjected to an increasing tensile pull until it fractures. A stress-strain curve may be plotted, and the limit of proportionality, proof stress, yield point, ultimate ...