21 Terms
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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
Photometric method
Mining; General mining
A dust-sampling method in which samples of dust are collected on philtre paper and then placed in a photometer. The instrument shows the intensity of a beam of light after it has passed through the ...
Sugar-tube method
Mining; General mining
A dust-sampling technique that measures airborne dustiness on a mass basis. In the glass tube is placed a layer, 1-1/2 in (3.8 cm) deep, of sized granulated sugar weighing 100 g. By means of a ...
Long-running thermal precipitator
Mining; General mining
A dust-sampling instrument designed by the Mining Research Establishment of Great Britain that operates over periods of up to 8 h and collects only respirable dust that is selected aerodynamically ...
Kotze konimeter
Mining; General mining
A dust-sampling instrument consisting of an air cylinder and piston actuated by a spring, and so arranged that on release of the piston a known volume of air is impinged at high velocity against a ...
Holman dust extractor
Mining; General mining
A dust trap in which the dust and chippings created during percussive drilling are drawn back through the hollow drill rod and out through the rear of the machine and along a hose to a metal ...
Greenburg-Smith impinger
Mining; General mining
A dust-sampling apparatus evolved by the U.S. Bureau of Mines that makes use of the principle of impingement of the dust-laden air at high velocity on a wetted glass surface, together with that of ...
