The calorific value obtained when coal is burned under a boiler.
Kentucky
A degree-day unit based on a (usually) 45 degrees F or 55 degrees F (7.2
degrees C or 12.9 degrees C) mean daily temperature so as to be applicable
to industrial buildings maintained at relatively low temperatures.
Strock, 2
a. Crystalline and/or cryptocrystalline diamonds having color, shape,
size, crystal form, imperfections, or other physical characteristics that
make them unfit for use as gems. Industrial diamonds usually are grouped
as toolstones, drill diamonds, fragmented bort, ballas, and carbons. Also
called industrials; industrial stones. See also:diamond
b. Impure diamond used in borehole drilling and the grinding industry.
Also called black diamond; bort; boart; carbonado. Pryor, 3
Rocks and minerals not produced as sources of the metals, but excluding
mineral fuels. See also:non-metallic minerals
See:heterogranular
Uranium is soluble in acid waters and tends to be removed in solution, but
radium is much less soluble and its compounds tend to remain behind in the
leached outcrop. Therefore, the outcrop may be radioactive due to the
presence of the gamma-emitting elements RaC and RaD, even though much of
the uranium has been lost in solution. In this case a radiometric assay
may indicate a high counter reading, but the uranium content may be low.
Uranium minerals deposited less than a million years ago may be in
inequilibrium because daughter products have not accumulated in their
equilibrium amounts. Hence, counter readings may indicate less uranium
than is actually present. See also:radiometric assay
An anode that is insoluble in the electrolyte under the conditions
obtained in the electrolysis. Lowenheim
a. Any dust that contains only a small amount of combustible material.
Rice, 1
b. Dust that has no harmful effect. Hartman, 1
a. A gas that is normally chemically inactive, esp. in not supporting
combustion. Webster 3rd
b. One of the helium group of gases comprising helium, neon, argon,
krypton, xenon, and sometimes radon. Also called a noble gas; a rare gas.
Webster 3rd
The reluctance of a body to change its state of rest or of uniform
velocity in a straight line. Inertia is measured by mass when linear
velocities and accelerations are considered and by moment of inertia for
angular motions (that is, rotations about an axis). CTD
A coal maceral group including micrinite, macrinite, sclerotinite,
fusinite, semifusinite, and inertodetrinite. They are characterized by a
relatively high carbon content and a reflectance higher than that of
vitrinite. They are relatively inert during the carbonization process.
Syn:inerts
A cylinder of inert material that enshrouds a detonator, but that does not
interfere with the detonation of the explosive charge. BS, 12
Constituents of a coal that decrease its efficiency in use; e.g., mineral
matter (ash) and moisture in fuel for combustion or fusain in coal for
carbonization. Syn:inertinite
A triclinic mineral, Ca2 Mn7 Si10 O28 (OH)
2 .5H2 O ; forms small prismatic crystals, fibers, or radial
aggregates; associated with some manganese deposits; although related to
zeolites, contains no aluminum.
Mine workers served by drifts and adits are subject to occasional attacks
of this disease, which is often fatal. It is caused by a micro-organism,
the principal carrier of which is the sewer rat. If the skin is scratched,
the germ can enter the bloodstream of the miner. Preventive measures
include clearing up of all stores, food, and other waste to deprive the
rats of food and of a systematic extermination by a pest control officer.
Also known as Weil's disease. See also:mining disease
Sinclair, 1
Ore for which estimates are based on an assumed continuity beyond measured
and/or indicated ore. Inferred resources may or may not be supported by
samples or measurements.
The in-place part of an identified resource from which inferred reserves
are estimated. Quantitative estimates are based largely on knowledge of
the geologic character of a deposit for which there may be no samples or
measurements. The estimates are based on an assumed continuity beyond the
reserve base, for which there is geologic evidence. USGS, 2
Resources from which estimates are based on an assumed continuity beyond
measured and/or indicated resources, for which there is geologic evidence.
Inferred resources may or may not be supported by samples or measurements.
USGS, 2
a. Material used for filling in; filling. Standard, 2
b. Material, such as hardcore, used for making up levels; e.g., under
floors. CTD
The flow of a fluid into a solid substance through pores or small
openings; specif. the movement of water into soil or porous rock.
CF:percolation
An interstitial mineral deposit formed by the action of percolating
waters. CF:segregated vein