Molten metal used to wash out a furnace, ladle, or other container.
ASM, 1
A miner's slang term for a donkey; burro. Standard, 2
The process of treating silver ores by grinding in pans or tubs with the
addition of mercury, and sometimes of chemicals, such as blue vitriol and
salt. Named from the Washoe District, NV, where it was first used.
Webster 3rd
Crude iron ore containing readily liberated particles of pure iron ore,
loosely agglomerated with sands from which they can be separated by
scrubbing treatment. See also:natural ore
a. A channel or channellike feature produced in a sedimentary deposit by
the scouring action of flowing water and later filled with the sediment of
a younger deposit. Syn:scour and fill
b. A channel cut into or through a coal seam at some time during or after
the formation of the seam, generally filled with sandstone--or more rarely
with shale--similar to that of the roof. See also:cutout; horseback;
want; low. Raistrick; AGI
c. Barren, thin, or jumbled areas in coal seams in which there is no
actual disruption and no vertical displacement of the coal and strata.
These disturbances may be divided into three main types; namely (1)
classical washouts, (2) pressure belts, and (3) tremor tracts. Authentic
washouts should be restricted to the first group. Also called rock fault;
nip. See also:roll
d. Local thinning or disappearance of a coal seam due to erosion during or
shortly after its formation. BS, 11
e. Channellike features that cut or transgress the stratification of the
underlying beds; may be small scour-and-fill structures or large erosional
channels. Also called cutout. Pettijohn, 1
Valve in a pipeline or a dam that can be opened occasionally to clear out
sediment. Hammond
a. To wash away or remove material from around the outside of casing pipe,
drill stem, junk, or tramp materials in a borehole.
See also:washover shoe
b. Material deposited by the action of overwash; specif. a small delta
built on the landward side of a bar or barrier, separating a lagoon from
the open sea, produced by storm waves breaking over low parts of the bar
or barrier and depositing sediment in the lagoon. CF:blowover
AGI
A casing shoelike bit used to drill downward around a piece of drilling
equipment stuck in a borehole. See also:washover
A pan for washing pay dirt in placer mining. Standard, 2
The pipe that ejects the jet of water through the bit, used in wash
boring. Long
A place where ores are washed and separated from the waste; usually
applied to places where the hand jigs are used. See also:washery
Fay
See:alluvial plain
In tin-plate manufacturing, a pot containing melted tin into which the
plates are dipped to be coated. Webster 3rd
A heavy wall pipe used in lieu of drill rods to conduct water downward
inside and to the bottom of a drivepipe being sunk through overburden by a
wash-and-drive method. Syn:wash tube
A practice in which promoters, through the connivance of brokers who
pretend to carry through transactions and thus obtain false quotations,
create a fictitious flurry of activity in the stock market. Hoover
See:wash; washing stuff.
An inclined table used for cleaning coal or ore in which the lighter
material or gangue is washed away by water. The coal or ore is fed onto
the table and water is allowed to flow down the table carrying away the
impurities.
Rotating horizontal drum that receives ore at one end and water at the
other. Ore is tumbled countercurrent to the water so that coarse solids
are discharged continuously while water now charged with mud and fine
material overflows at the feed end. Pryor, 3
See:wash rod
Water circulated through the drill string, past the bit, and then out of
the borehole between the rods and the walls of the hole while drilling or
during washing operations. See also:water wash
An altered variety of allanite. Standard, 2