A reaming shell, the reaming diamonds of which are inset in shaped, hard,
metal plates brazed into grooves cut into the outside surface of the
shell. Long
Bits or reaming shells set with inserts. See also:insert
a. The entrance to underground roads from the shaft; a landing.
See also:ingate
b. See:phenocryst
c. The opening from the mine shaft to a seam of coal. CTD
d. A surface into which diamonds or other cutting points are embedded or
set; also, the act or process of embedding such materials in a surface.
Long
A term often used to designate the interior of a mine. Fay
See:angling
The difference between the outside diameter of a core and the inside
diameter of the core-barrel parts through which the core passes or enters;
also, the annular space between the inner and outer tubes in a double-tube
core barrel. See also:clearance
That part of the bit crown nearest to and/or parallel with the inside wall
of an annular or coring bit. Long
The inside diameter of a bit as measured between the cutting points, such
as between inset diamonds on the inside-wall surface of a core bit.
Long
A diamond set in the inside-wall surface of the crown of a diamond core
bit so that it cuts sufficient inside clearance to permit the core to pass
through the bit shank and into the core barrel without binding.
Syn:inside kicker; inside reamer; inside stone. Long
In bituminous coal mining, one who operates a mine locomotive to haul
trains of cars along underground haulageways in a mine. DOT
A side track or parting some distance from the beginning of a long entry,
at which cars are left by a gathering driver. Also called a swing parting.
Fay
a. A slope on which coal is raised from a lower to a higher entry, but not
to the surface. Fay
b. An inside slope is a passage in the mine driven through the seam by
which coal is brought up from a lower level. Korson
A tubular piece having ends that are thickened for a short distance on the
inside. See also:upset
a. The drilling of boreholes in underground workplaces; also applied to
work done on the surface with the drill machine and tripod completely
housed. Long
b. Any work in the mines. Most commonly used in bituminous coal mining.
a. In the natural or original position. Applied to a rock, soil, or fossil
occurring in the situation in which it was originally formed or deposited.
See also:place
b. Said of tests done on a rock or soil in place, as compared with
collecting discrete samples for testing in the laboratory.
c. See:solution mining
A six-sided in situ vat containing liquid or gas for ore treatment and
recovery of mineral values requiring elevated temperatures and pressure,
usually for long periods of time. Lombardi
Process that can recover the energy of coal seams without the extensive
use of traditional mining operations. The primary product brought from
underground is hot fully combusted flue gas, 1,100 to 1,800 degrees F
(approx. 600 to 1,000 degrees C), whose sensible heat contains most of the
heating value of the coal, 5,000 to 13,000 Btu/lb (11.6 to 30.2 MJ/kg).
Particularly applicable to coal deposits that are not economically or
technically feasible to mine by conventional methods because of seam
quality or quantity, depth, dip, strata integrity, overburden thickness,
etc. SME, 1
a. A hydrometallurgical process that treats ore for the recovery of
mineral values while the ore is in place. It is a true mining technique in
that the ore is not extracted from the ground and no mine waste piles or
tailings impoundments are created. SME, 1
b. A leaching technique in which ore is leached in place by solution
injected into the deposit through wells. CF:solution mining
Aplan