A dark-colored syenite composed chiefly of augite and alkali feldspar, and
possibly containing olivine, hornblende, biotite, and nepheline. Its name,
given by Weed and Pirsson in 1895, is derived from Shonkin, the Indian
name for the Highwood Mountains of Montana. AGI
a. Miner's work train. Korson
b. Any crosscut between a haulageway and airway through which cars are
run. See also:pickup; slant.
a. See:ore shoot; pipe; blast; chute. Also spelled chute.
b. To break coal loose from a seam by the use of explosives; loosely used,
also as applied to other coal-breaking devices. BCI
c. To break down by airblasting. BS, 12
d. A body of ore, usually of elongated form, extending downward or upward
in a vein. Also called ore shoot. Long
e. The payable section of a lode; an enriched portion of a continuous
orebody. Nelson
f. Any considerable and somewhat regular mass of ore in a vein, frequently
a rich ore streak in a vein; a chimney; also, a vein branching at a small
angle from and reentering the main vein. Standard, 2
g. The valuable minerals are commonly concentrated in certain portions of
a vein that have one dimension much longer than the others. This shoot or
chimney of ore is usually highly inclined to the horizontal. Lewis
h. To explode a charge in blasting operations. Hudson
i. See:blast
j. In seismic exploration, the firing of the explosive by an electrical
impulse; also, the process of carrying out a seismic survey, to shoot an
area or prospect. AGI
See:blaster
The use of explosives in rock breaking.
See:blanket shooting
In marine seismic exploration, a boat equipped to carry explosives, and
from which the placing and firing of shots are performed. AGI
The making of a seismographic survey. The term shooting derives from the
setting off of explosions in the ground. The shock waves from these
explosions are recorded by a seismograph, and from these records a contour
map can be made. Williams
A blasting needle; a metallic rod used in the stemming of a drill hole for
the purpose of leaving a cavity through which a charge may be fired.
Fay
Mining coal by heavy blasting without undermining or shearing it. In
England, called shooting fast. Fay
The use of a smaller charge of powder to blow down the face of the coal
after it has been undercut, as distinguished from "shooting
off-the-solid". Fay
The right to enter upon land and make a geophysical survey.
Williams
In seismic operations, a truck equipped to carry explosives, materials,
and equipment for preparing, loading, tamping, and firing explosive
charges. AGI
The control valve provided for the purpose of admitting compressed air to
an airblasting shell and of venting residual air, in the shell and hose,
to the atmosphere. BS, 12
A rivet driven in a workshop, as distinct from a field or site rivet.
Hammond
A precise electronic measuring system for indicating distance from an
airborne or shipborne station to each of two fixed ground stations
simultaneously by recording (by means of cathode-ray screens) the time
required for round-trip travel of radar signals or high-frequency radio
waves and thereby determining the position of the mobile station. Its
range is effectively limited to line-of-sight distances (or about 40 nmi
or 74 km). Shoran is used in control of aerial photography, airborne
geophysical prospecting, offshore hydrographic surveys, and geodetic
surveying for measuring long distances. CF:loran
navigation. AGI
The coarse material covering the bottom where the agitation of the water
at the bottom is effective constitutes shore drift.
See also:littoral drift
A scale of hardness of rocks as determined by the Shore scleroscope test.
The scale avoids the limitation of Mohs' scale of hardness and gives
better assessment of rock hardness. See also:tungsten carbide bit
See:fringing reef
An instrument comprising a small diamond-shaped hammer that falls freely
down a graduated tube of glass from a constant height. The hardness of the
surface under test is measured by the height of the rebound. In one type
of this instrument, the rebound of the hammer actuates the pointer of a
scale so that the height of rebound is recorded.
See also:scleroscope hardness test
a. A terrace produced by the action of waves and currents along the shore
of a lake or sea; e.g., a wave-built terrace. AGI
b. Marine terrace. AGI