The shuttering erected at the end of a length of concrete construction and
shaped to provide a suitable joint for the next length. Hammond
A column of ore left to support the stope. Pryor, 3
a. A stoping drill.
b. A light percussive drill incorporating a pneumatic cylinder to provide
support and thrust while drilling steeply upward. BS, 12
c. See:stope driller
See:roof bolter
The sampling of exposure in the stopes, or of material coming from the
stopes. This type of sampling permits a closer control of the grade of ore
being won and is conducted largely at the working place or stope.
Truscott
In metal mining, one who shovels or rakes ore into mine cars in a stope
(an underground opening in a vein from which ore is extracted in a series
of steps). Syn:hand scraper
In gold mines, auriferous slimes washed down from the floor (footwall) of
the stope and sent to the mill. Pryor, 3
a. The act of excavating rock, either above or below a level, in a series
of steps. In its broadest sense rock stoping means the act of excavating
rock by means of a series of horizontal, vertical, or inclined workings in
veins or large, irregular bodies of ore, or by rooms in flat deposits. It
covers the breaking and removal of the rock from underground openings,
except those driven for exploration and development. The removal of ore
from drifts, crosscuts, shafts, winzes, and raises, which are excavated to
explore and develop an ore deposit, is incidental to the main purpose for
which stopes are driven and is not a stoping operation. Exploratory and
development openings are driven to prepare a mine for extraction of the
ore by stoping. See also:stope
b. In civil engineering, an enlargement. Fraenkel
c. The loosening and removal of ore in a mine either by working upward
(overhead or overhand) or downward (underhand). AGI
See:overhand stoping
A small air or electric drill, usually mounted on an extensible column,
for working stopes, raises, and narrow workings.
Part of an orebody opened by drifts and raises, and ready for breaking
down.
See:overhand stoping
The classification of stoping methods adopted by the U.S. Bureau of Mines,
devised largely on the basis of rock stability, is as follows: (1) stopes
naturally supported--this includes open stoping with open stopes in small
orebodies, and sublevel stoping; and open stopes with pillar supports that
includes casual pillars and room (or stope) and pillar (regular
arrangement); (2) stopes artifically supported--this includes shrinkage
stoping, with pillars, without pillars, and with subsequent waste filling;
cut-and-fill stoping; stulled stopes in narrow veins; and square-set
stoping; (3) cave stopes--this includes caving (ore broken by induced
caving), block caving, including caving to main levels and caving to
chutes or branched raises; sublevel caving and top slicing (mining under a
mat that, together with caved capping, follows the mining downward in
successive stages); and (4) combinations of supported and caved stopes (as
shrinkage stoping with pillar caving, cut-and-fill stoping with top
slicing of pillars, etc.)
Mining a stope downward in such a series that presents the appearance of a
flight of steps.
a. Width of lode broken during mining, including any barren rock.
Pryor, 3
b. Used in underground sampling and is estimated from direct measurement
behind the stope face and reduced to allow for any waste stowed. With wide
tabular deposits, there is little difference between the stoping width and
the clean width. Nelson
To close off part of a mine by means of a brattice, wall, stopping, etc.
In a puddling furnace, the hole through which the rabble is introduced.
Webster 2nd
One who forms and finishes fire clay stoppers for open hearth ladles,
using a stopper press and a finishing machine. DOT
a. A brattice, or more commonly, a masonry or brick wall built across old
headings, chutes, airways, etc., to confine the ventilating current to
certain passages, and also to lock up the gas in old workings, and in some
cases to smother a mine fire.
b. A permanent wall built to close off unused crosscuts to prevent the air
from short circuiting. Lewis
c. A dam or seal to isolate old workings containing water or injurious
gases. See also:dam; inrush of water. Syn:ventilation stopping
Nelson
In bituminous coal mining, one who builds walls of concrete, stone, or
brick and mortar, to close off old passageways or haulageways underground,
to maintain ventilation in new workings. DOT
An underground locomotive powered by storage batteries. Hammond