Pneumatically applied portland cement mortar, or gunite. The spraying of
mine openings with concrete to provide ground support, present a smooth
surface to the air current, and prevent weathering with the mortar.
See also:lining; timber preservation; Aliva concrete sprayer.
a. See:rod dope
b. Any gummy substance that collects inside the working parts and hinders
the operation of a machine or other mechanical apparatus. Long
c. A permanent emulsion that forms in liquid-liquid extraction equipment,
often containing dust or other solid matter at the core of each globule.
Scot. See:blown-out shot
a. Corn. In mining, measure of breadth or width, a single gunnie being 3
ft (0.91 m) wide. Standard, 2
b. Corn. The vacant space left where the lode has been removed; a crevice.
Plural: gunnies. Also spelled gunniss; gunnice. Syn:house
A monoclinic mineral, (Zn,Mn)SO4 .H2 O ; kieserite group; as
efflorescences on sphalerite from the Keno Hill and Galena Hill area,
central Yukon Territory, Canada.
gunning the pits
Agitation of the drilling fluid in a pit by forcing a portion of the fluid
under pressure through a constricted tube or gun, jetting it into the main
body of fluid. Brantly, 1
In petroleum production, one who loads explosive powder into gun
perforators used in shooting holes through tubings, casings, and earth
formations of oil or gas wells to aid in well drilling or producing
operations, working either in shop or at well site. Also called the
loader; perforator loader. See also:loader
Paper spread with an explosive compound. It is rolled up for use in
loading. Standard, 2
A press for compacting meal powder before granulating into gunpowder.
A surveyor's chain that is 66 ft (20 m) long, consisting of a series of
100 metal links each 7.92 in (20.1 cm) long and fastened together with
rings. It served as the legal unit of length for surveys of U.S. public
lands, but has been superseded by steel or metal tapes graduated in chains
and links. Named after Edmund Gunter (1581-1626), English mathematician
and astronomer, who invented the device about 1620. Syn:chain;
pole chain. AGI
A snow-white variety of dolomite, containing a large proportion of
calcium. Standard, 2
a. A mason's pickax having one cutting edge and a point.
b. A pickax having a sharply pointed peen and a bladed peen for cutting.
A mine level; working. Standard, 2
a. A rope used for drawing a basket of coal in a thin seam. CTD
b. Brist. A short piece of rope by which a boy draws a tram or sled in a
A V-shaped cut in the face of a heading. Stauffer
A number of small plows attached to a rope or chain which cut backward and
forward on the face. They operate in conjuction with an armored conveyor.
Gusto scraper box
An arrangement of scraper boxes with cutting knives attached to the face
side. See also:scraper box plow
To rob, or extract, only the rich ore of a mine. Weed, 2
a. The lowest and usually richest portion of an alluvial placer. The term
is used in Australia for the dry bed of a buried Tertiary river containing
alluvial gold. Syn:bottom
b. A gob heading. Nelson
c. A drainage trench. Nelson
d. A small airway made through a goaf or gob. CTD
e. In deep lead mining, the lowest portion of a deep lead filled with
auriferous wash dirt. Eng. Min. J., 1
f. A channel or gully worn by running water. Webster 3rd
a. A channel cut along the side of a mine shaft to conduct the water back
into a lodge or sump.
b. A process of quarrying stone in which channels, several inches wide,
are cut by hand tools, and the stone block detached from the bed by pinch
c. The formation of more or less vertical breaks at or toward the
centerline of a roadway, as a consequence of which falls occur along the
groove or gutter. TIME