A process that is designed to move the mined product (usually coal) from a
continuous mining machine to a mine belt conveyor system as a continuous
flow. One end of the continuous haulage system (the outby end) always
remains positioned so that it discharges onto the mine belt; the other end
(inby end) is free to move as the mining machine advances so as to be able
to receive the product from the machine's conveyor discharge.
A rolling mill consisting of a number of stands of synchronized rolls (in
tandem) in which metal undergoes successive reductions as it passes
through the various stands. ASM, 1
A mining machine designed to remove coal from the face and to load that
coal into cars or conveyors without the use of cutting machines, drills,
or explosives. See also:Goodman miner; Marietta miner. Jones, 1
Mining in which the continuous mining machine cuts or rips coal from the
face and loads it onto conveyors or into shuttle cars in a continuous
operation. Thus, the drilling and shooting operations are eliminated,
along with the necessity for working several headings in order to have
available a heading in which loading can be in progress at all times.
See also:conventional machine mining; plow-type machine.
Woodruff
A seismic method of shooting in which seismometer stations are placed
uniformly along the length of a line and shot from holes also spaced along
the line so that each hole records seismic-ray paths identical
geometrically with those from immediately adjacent holes, so that events
may be carried continuously by equal-time comparisons.
CF:correlation shooting
A reaction series in which early-formed crystals in a magma react with
later liquids without abrupt phase changes; e.g., the plagioclase
feldspars form a continuous reaction series.
CF:discontinuous reaction series
In geophysics, the process of making uninterrupted records or observations
over selected periods of time. AGI
An aerial ropeway that operates on the same principle as the endless rope
haulage. The loaded buckets are hauled by an endless rope in one direction
and the empty buckets travel back on the return rope alongside.
Nelson
Taking a sample from each unit so that increments are taken at regular
intervals whenever the coal or coke is handled at the point of sampling.
BS, 2
Presintering, or sintering, in such manner that the objects are advanced
through the furnace at a fixed rate by manual or mechanical means.
Syn:stoking
Any smelter that is fed constantly and that discharges frit in a
continuous stream. The passage of the material through the smelter is
generally effected by gravitational flow. Enam. Dict.
a. The band of all wavelengths in the electromagnetic spectrum (the
rainbow colors, red, orange, yellow, green, blue, and violet), merging one
into the other, produced by all incandescent solids. Anderson
b. The spectrum of a wave, the components of which are continuously
distributed over a frequency range. Hunt
A type of gas retort in which coal is continuously charged into the top of
the retort, coke is extracted from the bottom, and town gas is drawn off.
Continuous vertical retorts are also used in the zinc industry. The charge
of briquetted coke and roasted concentrate is continuously added through
the top and zinc vapor is drawn off and condensed.
a. The intricate folding, bending, or twisting-together of laminated
sediments on a considerable scale, the laminae being drawn out or
compressed in such a manner as to suggest kneading more than simple
folding; esp. intraformational contortion. Also, the state of being
contorted. AGI
b. A structure produced by contortion. AGI
a. An imaginary line, or a line on a map or chart, that connects points of
equal value, e.g., elevation of the land surface above or below some
reference value or datum plane, generally sea level. Contours are commonly
used to depict topographic or structural surfaces; they can also readily
show the laterally variable properties of sediments or any other
phenomenon that can be quantified. CF:structure contour
Syn:contour line
b. The outline or configuration of a surface feature seen
two-dimensionally, e.g., the contour of a mountain pass or a coastline.
AGI
c. A line drawn through points of equal elevation on any surface. It is
the intersection of a horizontal plane with the surface. Rice, 1
d. A line or a surface at all points of which a certain quantity,
otherwise variable, has the same value (as lines of equal elevation on the
ground or isothermal surfaces in a heat-conducting solid).
Webster 3rd
e. As a verb, to construct (as a road) in conformity to a contour. To
provide (as a map) with contours (contour lines). To draw or to plot a
contour. Webster 3rd
f. The profile or cross-sectional outline of a bit face. Long
a. A type of petrofabric diagram prepared by the contouring of a point
diagram. Its purpose is to obtain easier visualization of the results of
the petrofabric study. AGI
b. An equal-area projection of structural data in which the poles have
been contoured according to their density per unit area on the projection.
AGI
A line marked on the ground surface at a given constant slope.
Hammond
a. The difference in elevation between two adjacent contour lines.
AGI
b. The difference in value between two adjacent contours; e.g., the
vertical distance between the elevations represented by two successive
contour lines on a topographic map. It is generally a regular unit chosen
according to the range of values being contoured. Syn:interval
AGI
See:contour
a. A map showing by contours (or contour lines) topographic, or
structural, or thickness, or facies differences in the area mapped.
AGI
b. A map that portrays surface configuration by means of contour lines;
esp. a topographic map that shows surface relief by means of contour lines
drawn at regular intervals above mean sea level, or a structure-contour
map that shows the configuration of a specified rock surface underground
and the inferred configuration of that surface where it has been removed
by erosion. AGI