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 used in microscopy to determine the index of refraction of a mineral grain relative to that of an immersion liquid. When transmitted light is blocked, the grain acts as a lens and the ocular ...

oblique illumination method

Mining; General mining

fallhammer test

Mining; General mining

A test used to determine impact sensitivity of an explosive conducted by allowing standard hammer weights to fall on an amount of confined explosive charge and measuring the fall height required to ...

sedimentation test

Mining; General mining

A test used when selecting materials for stabilized road construction and concrete. Soil, after pretreatment, is shaken up in water and allowed to settle out. The change in specific gravity of the ...

return-line corrosion tester

Mining; General mining

A tester developed by the U.S. Bureau of Mines for detecting and controlling corrosion in steam-condensate-return lines of large heating plants. This tester determines types and rates of corrosion ...

pyrene

Mining; General mining

A tetracyclic hydrocarbon obtained from the coal-tar fraction boiling above 360 degrees C; C 16 H 10 ; soluble in carbon disulfide, toluene, and ligroin.