a. Free from combustible gases or other noxious gases.
b. A coal seam free from dirt partings.
c. A diamond or other gem stone free from interior flaws. Hess
d. A borehole free of cave or other obstructing material. Long
e. A mineral virtually free of undesirable nonore or waste rock material.
Long
f. Free of foreign material. In reference to sand or gravel, it means lack
of binder Nichols, 1
U.S. law: 42 USC Sections 7401-7428 (1979) and resulting regulations in 40
CFR51, administered by USEPA. Its objective is to reduce atmospheric
pollution to acceptable limits. Inter alia, it empowers local authorities
to declare smoke control areas in which the emission of any smoke from
chimneys will constitute an offense. The act became part of Great
Britain's national legislation in July 1956, although its main provisions
did not become effective until June 1, 1958. See also:coal smoke;
smoke. Nelson
A rock formation, the cuttings of which do not tend to mud up on the face
of a diamond or other bit. Long
a. Rock cuttings that do not ball or adhere to the walls of a borehole.
Long
b. Rock cuttings not contaminated by cave material or drill-mud
ingredients. Long
Coal produced by a mechanical cleaning process (wet or dry). BS, 5
Scot. A scraper for cleaning out a shothole. Fay
Secondary cell for the retreatment of the concentrate from a primary cell.#WORD ®9¯ ®22¯ recleaner cell ®5362¯ ®5363¯
Syn:recleaner cell
A borehole free of cave or other obstructing material. Long
a. A general term for the methods and processes of separating dirt from
coal or gangue from mineral. See also:coal-preparation plant; roughing.
Nelson
b. The retreatment of the rough flotation concentrate to improve its
quality. Pryor, 4
See:coal washer; preparation plant.
a. To remove cave or other obstructing material from a borehole.
Long
b. A port or opening provided in the body or base of a machine or other
mechanism through which accumulated debris may be removed. Long
An auger equipped with water-jet orifices designed to clean out collected
material inside a driven pipe or casing before taking soil samples from
strata below the bottom of the casing. Also called cleanout auger;
M.P.F.M. jet auger. Long
a. The operation of collecting all the valuable product of a given period
of operation in a stamp mill, or in a hydraulic or placer mine.
b. The valuable material resulting from a cleanup.
c. To load all the coal a miner has broken.
d. The cleanup of sluices in placer mining is a similar process that
occurs daily or more often. The gold, tin, or other concentrate is
shoveled out for further treatment. Nelson
e. To police and tidy up a drill rig and the surrounding area.
Long
A barrel used to batch grind and then amalgamate gold-bearing concentrates
and residues. Pryor, 3
a. Translucent diamond with few visible spots or flaws. Long
b. Water that has not been recirculated in drilling and hence is free of
drill cuttings and sludge. Also applied to return water when it contains
little or no entrained cuttings or sludge. Long
c. A safe working place. Long
d. Transparent, such as in clear quartz, clear glass.
a. The space between the top or side of a car and the mine roof or wall.
Fay
b. Technically, the annular space between downhole drill-string equipment,
such as bits, core barrels, casing, etc., and the walls of the borehole
with the downhole equipment centered in the hole. Loosely, the term is
commonly and incorrectly used as a syn. for exposure. See also:exposure;
inside clearance. Long
c. The amount of open space around a drill or piece of mining equipment in
an underground workplace. Long
A space in pumps of the piston and ram types, usually quite small, between
the cylinder end and the piston at the end of its stroke. The height to
which water can be raised on the suction side is influenced by the volume
of this space. Mason
A clay such as kaolin that is free from organic matter and so does not
give rise to bubbles if used in a vitreous enamel; such clays are used in
enamels when good gloss and clear colors are required. Dodd
A reservoir (in saltmaking) into which brine is conveyed. Fay
The removal of all standing growth, whether bushes or trees.
Carson, 1