Tapping off excess slag after the ore boil in the basic open-hearth
process of steelmaking. Bennett
a. To crumble or disintegrate, such as coal or lime.
b. Small coal.
c. To mix with water, so that a chemical combination takes place, as in
the slaking of lime.
d. To crumble in water. Van Vlack
a. The crumbling and disintegration of earth materials upon exposure to
air or moisture; specif. the breaking up of dried clay or soil when
saturated with or immersed in water, or of coal or clay-rich sedimentary
rocks when exposed to air. AGI
b. The disintegration of the walls of tunnels in swelling clay, owing to
inward movement and circumferential compression. AGI
c. The treating of lime with water to give hydrated (slaked) lime.
AGI
Eng. Thin slurry and mud, Yorkshire lead mines. Arkell
a. Any short, inclined crosscut connecting the entry with its air course
to facilitate the hauling of coal. Commonly called a dip switch when the
coal is not level. See also:shoo-fly
b. A heading driven diagonally between the dip and the strike of a coal
seam. Also called a run. See also:counter; stone drift; surface drift.
Fay
Chute driven diagonally across to connect a breast manway with a manway
chute. See also:slant
Eng. A set of joints in slate parallel to the main cleavage, Denbighshire.
Arkell
York. One vein crossing another at an acute angle. Arkell
Eng. See:back
a. There are many successive ridges of shingle running in varying
directions, and often with narrow strips of marsh enclosed between
successive ridges. Such bands of marsh have been given the very
appropriate name of slashes in New Jersey. AGI
b. Swampy land, overgrown with dense underbrush. Local in the Northeast.
AGI
c. An open or cutover tract in a forest strewn with debris, as from
logging; also such debris. AGI
A digging bucket of basket construction, used in handling sticky, chunky
mud. Nichols, 1
a. A compact, fine-grained metamorphic rock that possesses slaty cleavage
and hence can be split into slabs and thin plates. Most slate was formed
from shale. AGI
b. A coal miner's term for any shale accompanying coal; also, sometimes
the equivalent of bone coal. AGI
c. Dark shale lying next to the coalbeds. It contains impressions of the
plant life of distant ages, proving the vegetable origin of coal.
Korson
d. A fine-grained metamorphic rock that breaks into thin slabs or sheets.
Usually gray to black, sometimes green, yellow, brown, or red. Slates are
composed of micas, chlorite, quartz, hematite, clays, and other minerals.
Found in Pennsylvania, Vermont, Maine, Virginia, California, Colorado;
Europe. Used for roofing; decorative stone; various building applications;
in crushed form on shingles; abrasive; pigment. See also:clay slate;
phyllite; spotted slate. CCD, 2
a. A chute for the passage of slate and bony coal to a pocket from which
it is loaded into dump cars. Fay
b. A chute driven through slate. Fay
In the stonework industry, one who operates an upright drilling machine to
drill holes into slate so that the slabs may be fastened in place with
wires or rods when installed in a building. DOT
A term used in southern Wales for a dark fissile shale, resembling slate.
AGI
In bituminous coal mining, a laborer who shovels up falls of slate or rock
along haulageways in a mine and loads it into cars. Also called rock
handler. DOT
See:slate motorman
In anthracite and bituminous coal mining, a general term for a worker
handling slate or rock as distinguished from coal. Usually designated
according to type of activity, as rock driller; rock loader; slate
motorman; slate picker; slate shooter. Also called rockman; slate handler.
See also:rockman; slate handler. DOT
In anthracite and bituminous coal mining, a person who operates a mine
locomotive to haul trains of cars loaded with slate or shale, underground
and at the surface of a mine. Also called larryman; slate larryman.
DOT