A glossary of mining and metallurgical terms
A glossary of mining and metallurgical terms
A glossary of mining and metallurgical terms
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58 A GLOSSARY OF MINING AND METALLURGICAL TERMS.<br />
Mill-run, Pac. 1. The work <strong>of</strong> an amalgamating mill between<br />
two clean-ups. 2. A test <strong>of</strong> a given quantity <strong>of</strong> ore by actual treatment<br />
in a mill.<br />
Mine. 1. In general, any excavation for minerals. More strictly,<br />
subterranean workings, as distinguished from quarries, placer <strong>and</strong><br />
hydravlic mines, <strong>and</strong> surface or open works. The distinction between<br />
the French <strong>terms</strong> mine <strong>and</strong> miniere results entirely from the law, <strong>and</strong><br />
depends upon the dej^th <strong>of</strong> the working. The former is the more<br />
general term, <strong>and</strong>, ordinarily speaking, includes the latter, which<br />
signifies shallow or surface workings. 2, In a military sense, a mine<br />
is a subterranean gallery run under an enemy's works, to be subse-<br />
quently exploded.<br />
Mine-pig, Eng. See Pig-iron.<br />
Miner, Penn. The workman who ads the coal, as distinguished<br />
from the laborer who loads the wagons, etc.<br />
Mineral. In miners' parlance, ore.<br />
Mineral caoutchouc. Elastic bitumen.<br />
Mineral charcoal. A pulverulent, lustreless substance, showing dis-<br />
tinct vegetable structure, <strong>and</strong> containing a high percentage <strong>of</strong> carbon<br />
with little hydrogen <strong>and</strong> oxygen, occurring in thin layers in bitu-<br />
minous coal.<br />
Mineralized. Charged or impregnated with metalliferous mineral.<br />
Mineral oil or Naphtha. A limpid or yellowish liquid, lighter<br />
than water, <strong>and</strong> consisting <strong>of</strong> hydrocarbons. Petroleum is heavier<br />
than naphtha, <strong>and</strong> dark greenish in color when crude. Both exude<br />
from the rocks; but naphtha can be distilled from petroleum.<br />
Mineral pitch. Asphaltum.<br />
Mineral right. The ownership <strong>of</strong> the minerals under a given sur-<br />
face, with the right to enter thereon, mine, <strong>and</strong> remove them. It<br />
may be separated from the surfiice ownershi[), but, if not so sepa-<br />
rated by distinct conveyance, the latter includes it.<br />
Mineral wool. See Slag-wool.<br />
Mine-rerd. The rent or royalty paid to the owner <strong>of</strong> a mineral<br />
right by the operator <strong>of</strong> the mine—usually dependent, above a fixed<br />
minimum, upon the quantity <strong>of</strong> product.<br />
Mineria, Sp. Mining. This term embraces the whole subject,<br />
including both mines <strong>and</strong> miners, <strong>and</strong> also the operations <strong>of</strong> work-<br />
ing mines <strong>and</strong> <strong>of</strong> reducing their ores. It, however, is <strong>of</strong>ten used in<br />
a more restricted sense.<br />
Muiero, Sp. Miner. This term is not limited to those who work<br />
mines, but includes their owners, <strong>and</strong> all who have the qualifications