a. A cavity formed in a borehole by the detonation of an explosive charge
placed in it. Also called chamber. See also:spring; socket.
Long
b. A quarry blasting hole enlarged by chambering. Nelson
a. The period during which a furnace is continuously in operation.
Fay
b. The working life of a tank or other melting unit between major cold
repairs. ASTM
A lamprophyre, similar in composition to nepheline diorite, being composed
essentially of plagioclase (usually labradorite) and brown hornblende
(usually barkevikite). AGI
A yellowish to brown variety of mimetite crystallizing in barrel-shaped
forms. A source of lead. See also:mimetite
In stamp milling, a strong horizontal revolving shaft to which a number of
cams are attached in such a manner that no two of them strike the tappets
at the same instant, thus distributing the weight to be lifted.
Fay
In stamp battery crushing, a square-sectioned wooden stick greased on the
underside and leather-lined above; it is inserted between cam and tappet.
Pryor, 3
a. A term used in the tristate zinc and lead district for a bucket used in
hoisting. A "can" ranges in capacity from 1,200 to 1,400 lb (544 to 635
kg). Jackson, 3
b. In a nuclear reactor, the container in which fuel rods are sealed to
protect the fuel from corrosion and prevent gaseous diffusion products
from escaping into the coolant. Hammond
a. A term used in the Western United States for a ravine, glen, or narrow
valley, smaller and less steep-sided than a canyon, such as the V-shaped
valley of a dry river bed; a dale or open valley between mountains.
AGI
b. A term used in the Western United States for a small stream; a creek.
Etymol: Spanish cana, cane, reed. AGI
See:chrysotile
The vast region of Precambrian rocks having an areal extent of 2 million
square miles (5.2 million km2 ) in eastern Canada. CTD
a. An artificial watercourse cut through a land area for use in
navigation, irrigation, etc. Hunt
b. That part of a tank leading from the relatively wide fining area to the
machine. ASTM
c. See:chute; ditch.
See:positive ray
A clay consisting mainly of colloidal aluminum silicate from British
Columbia, Canada. CCD, 2
a. Bird traditionally used for the detection of unsafe carbon monoxide or
low oxygen levels in early coal mines.
b. Term used for modern, handheld, electronic air quality monitors, which
replaced the use of canary birds.
c. Yellow diamond. Schaller
A yellow, earthy argentiferous lead ore, generally pyromorphite,
bindheimite, or massicot, more or less impure. Fay
A yellow variety of carnelian.
a. A part of a bed of stone worked by quarrying.
b. Eng. Roof or floor removed to make height and side removed to make
width. If above the seam, it is called a top canch; if below the seam, a
bottom canch. A canch on a roadway close to the face is called a face
canch; a canch on a roadway outbye is called a back canch. Also called
brushing; ripping. SMRB
c. The face of the roof ripping in a roadway. It follows that the canch is
continually being excavated and advanced.
See also:ripping face support
A trench with sloping sides and a very narrow bottom. Zern
a. A hexagonal mineral, Na6 Ca2 Al6 Si6 O (sub
24) (CO3 )2 .
b. The mineral group afghanite, cancrinite, davyne, franzinite,
guiseppettite, liottite, microsommite, sacrofanite, vishnevite, and
wenkite(?).
See:ceylonite
See:cannel coal; kennel coal.