A paperlike variety of asbestos occurring in thin sheets; specif. mountain
leather or mountain cork. AGI
A plain of combined erosion and transportation at the foot of a desert
mountain range, similar in form to an alluvial plain but beveling solid
rock.
A railway having such steep gradients that trains are hauled up them by
ropes or by a rack locomotive. See also:funicular railway
Hammond
A single, large mass consisting of a succession of mountains or narrowly
spaced mountain ridges, with or without peaks, closely related in
position, direction, formation, and age; a component part of a mountain
system or of a mountain chain. AGI
An unctuous variety of halloysite containing some iron oxide and about 24%
water. See also:saponite
A group of mountain ranges exhibiting certain unifying features, such as
similarity in form, structure, and alignment, and presumably originating
from the same general causes; esp. a series of ranges belonging to an
orogenic belt. CF:mountain chain
AGI
See:mineral tar
A variety of asbestos that is compact, fibrous, and gray to brown in
color, resembling wood. Syn:rockwood
In power shovel nomenclature, the mounting consists of a frame on which
the entire shovel is supported and on which it moves. Carson, 1
See:column pipe
A monoclinic mineral, UMo5 O12 (OH)10 ; forms
spherulitic masses of radiating purple fibers in incompletely oxidized
uranium ores.
A cylindrical fishing tool, fitted with an inward-opening flap valve at
the bottom end, used to recover small metal fragments from the bottom of a
borehole. Long
a. The surface outlet of an underground conduit, as of a volcano.
AGI
b. The collar of a borehole. Long
c. An opening resembling or likened to a mouth, such as one affording
entrance or exit. Webster 2nd
d. The entrance to a mine. BCI
e. The top of a mine shaft or the point of entrance to a slant, drift, or
adit. Nelson
f. The end of a shaft, adit, drift, entry, tunnel, etc., emerging at the
surface. Fay
g. The opening in a metallurgical furnace through which it is charged;
also, the taphole. Fay
h. The place of discharge of a stream, as where it enters a larger stream,
a lake, or the sea. AGI
i. The entrance or opening of a geomorphic feature, such as a cave,
valley, or canyon. AGI
Z? BOS KSS ът< ' DICTIONARY TERMS:mouthing See:shaft inset
[\B]mouthing[\N]
Aust. The top of a shaft. Fay
Any of several types of conveyors designed to be moved in a defined path.
See also:portable conveyor; shuttle conveyor.
The jaw or slip of a safety or foot clamp; it can be raised or lowered
into or out of the body or frame of the clamp either to engage or to
disengage the drill rods being run into or pulled out of a borehole.
Syn:movable slip
See:man machine
A washbox in which the screen plate supporting the bed of material under
treatment is moved up and down in water. BS, 5
See:movable jaw
Extension; move to a forward position. Syn:turnover
In a study of process costs (in large or in detail) a series of
costs-per-unit observed and recorded at regular intervals (usually in
monthly financial summaries cross referenced to analyzed detail cost).
Twelve months are covered and each month the new month's figures are added
and those for the corresponding month of the previous year are removed.
Therefore, like periods are always compared and seasonal fluctuations are
smoothed out. Abbrev., MAT. Pryor, 3