To survey an area or strip to determine elevations. Nichols, 1
a. Bearer or carrier girder, beam, or bar. Mason
b. A steel-shod poling board, driven into unbroken but loose ground as
excavation proceeds. See also:cross poling
c. See:driller
d. A fault slip. Fay
A distribution box that divides the molten metal into several streams
before it enters the mold cavity. ASM, 1
Vertical timber sheet piles driven to protect an excavation from collapse.
See also:guide runner; cross poling. Hammond
A slightly tapering, round stick, used as a pattern for the opening
through which molten metal is to be poured into the mold.
Standard, 2
a. The act or process of operating a drill, drilling with a bit, or
lowering casing, drivepipe, or drill string into a borehole. Long
b. Earth and rock that will not stand, esp. when wetted, and falls, flows,
or sloughs into a borehole or a workplace in a mine. Long
See:traveling block
The act of drilling without circulating a drilling fluid. Long
a. Insecure or easily caved wall of excavation. Pryor, 3
b. Ground that is incoherent, for example, soils, sand, peat, moss, or
waterlogged material. It may be semiplastic or plastic, such as wet clays.
All such deposits deform readily under pressure, and relief is obtained by
squeezing into openings, such as mine workings. The miner uses the term
running ground to indicate the difficulty of support and sometimes of
danger. See also:forepoling; quicksand; mud rush. Nelson
A lime kiln that is fed from above and delivers continually below.
Standard, 2
Light mine pump used in sinking, which can be raised or lowered in shaft
as required. Pryor, 3
Eng. Sand and gravel containing much water.
In founding, the opening of the taphole of a blast furnace and allowing of
the molten metal to flow out to the molds. Standard, 2
A flexible rope of 6 strands, 12 wires each, and 7 hemp cores.
Hunt
a. An unconsolidated sand. See also:run
b. Quicksand. Fay
A sheave used as a single-pulley traveling block. Long
a. That part of precipitation appearing in surface streams. AGI
b. The collapse of a coal pillar in a steeply pitching seam, caused either
naturally or by a small shot in connection with pillar robbing. The pillar
is said to have run off. Fay
The percentage of precipitation that appears as runoff. The value of the
coefficient is determined on the basis of climatic conditions and
physiographic characteristics of the drainage area and is expressed as a
constant between zero and one (Chow, 1964). Symbol: C. AGI
Catchment to which spillage can gravitate should it be necessary to dump
the contents of mill machines such as classifiers, thickeners, and slurry
pumps. Provided with a reclaiming pump so that the contents can be
returned to the appropriate part of the flow line. Pryor, 3
Corn. The direction or course of a lode.
Ore finally accepted by a mill for treatment, after waste and dense-media
rejection. Original mined ore (run-of-mine) is ore as severed and hoisted.
Syn:mill-head ore