Blasted rock. Nichols, 1
See:fire runner
Samples taken for assay from molten metal by pouring a portion into water
to granulate it. Webster 3rd
Term used to describe the surface finish of building limestone that is
deeply scored by using steel-shot abrasive with gangsaws. AIME, 1
Soil in which small pellets of iron oxide occur or are forming.
AGI
See:tamper
Bedded pebbles and sand; glacial outwash gravels. Arkell
The production of shot by pouring molten metal in finely divided streams.
Solidified spherical particles are formed during descent and are cooled in
a tank of water. ASM, 1
Small granular pieces of gold resembling shot.
a. A line formed by the intersection of the face or leading surface of a
bit crown and the straight-wall side surface of the crown. Long
b. A ledge formed by an abrupt change in the course of a borehole.
Long
c. A ledge or projection on drill rods, couplings, pipe, or bits formed at
points where an increase or decrease in diameter occurs. Long
d. The side of a horizontal pipe, at the level of the center line.
Nichols, 1
e. A short, rounded spur projecting laterally from the side of a mountain
or hill. AGI
f. The sloping part of a mountain or hill below the summit. AGI
S. Staff. Cutting the sides of the upper lift of a working place in a
thick coal colliery next to the rib, preparatory to breaking the coal.
The diamonds set in a bit at or along the line formed by the intersection
of the face or leading surface of a bit crown and the straight-walled side
surfaces of the bit crown or shank. CF:kerf stone
a. Any bucket-equipped machine used for digging and loading earthy or
fragmented rock materials.
b. There are two types of shovels, the square-point and the round-point.
These are available with either long or short handles. The round-point
shovel is used for general digging since its forward edge, curved to a
point, most readily penetrates moist clays and sands. The square-point
shovel is used for shoveling against hard surfaces or for trimming.
Carson, 1
c. See:power shovel
In bituminous coal mining, a maintenance mechanic who inspects, oils,
greases, adjusts, and repairs machinery of a power shovel used to dig and
load coal (after blasting) into cars in a strip mine. May be designated
according to type of power, as electric-shovel craneman; steam-shovel
craneman. Also called stripping-shovel craneman. DOT
A tractor equipped with a front-mounted bucket that can be used for
pushing, digging, and truckloading. Nichols, 1
In power-shovel nomenclature, the shovel front is composed of a main boom
and a secondary boom known as the dipper stick, at the outer end of which
is the dipper or shovel bucket. Carson, 1
A loading machine mounted on driven wheels by which it is forced into the
loose rock at the tunnel face. A bucket hinged to the chassis scoops up
the material, which is elevated over and discharged behind the machine.
There are two types: (1) the bucket is discharged directly into a mine car
behind the machine, and (2) a short conveyor, built into the loader,
receives the dirt from the bucket and conveys it back into a car or
conveyor. See also:mechanical shovel; loader; loading shovel.
Nelson
In a duckbill, the shovel part of the loading mechanism that is advanced
into a coal pile or retracted according to the adjustment of the operating
carrier. Jones, 1
a. When the flame of a safety lamp becomes elongated or unsteady, owing to
the presence of combustible gases in the air, it is said to show.
Zern
b. The detectable presence of mineral, oil, or gas in a borehole, as
determined by examination of the core or cuttings. Long
c. Visual particles of gold found in panning a gravel deposit. AGI
Rapid oxidation-roast of finely ground sulfide ores, which are caused to
fall through rising heated air. Pryor, 3
a. The first appearance of float, indicating the approach to an
outcropping vein or seam. Zern
b. Can. Surface occurrence of mineral. Hoffman