20 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
Expanding waterway
Mining; General mining
A channel or groove incised into and across the face of a bit, the depth and/or width of which gradually increases from the inside to the outside walls of the bit.
Paragenesis
Mining; General mining
A characteristic association or occurrence of minerals or mineral assemblages in ore deposits, connoting contemporaneous formation. Compare: mineral sequence.
Skimming gate
Mining; General mining
A channel in a sand mould having over it a bridge that removes the dross from the molten metal as it passes through.
Single shot
Mining; General mining
A charge in one drill hole only fired at one time, as contrasted with a multiple shot where charges in a number of holes are fired at one time.
By-wash
Mining; General mining
A channel or spillway designed to carry surplus water from a dam, reservoir, or aqueduct in order to prevent overflow.
Sandblast
Mining; General mining
A charge of dynamite, or other high explosive, fired in contact with the surface of a rock after being covered with quantity of wet mud, wet earth, or sand, no borehole being used. The slight ...
