a. A mine opened by a slope or incline.
b. A mine with an inclined opening used for the same purpose as a shaft or
a drift mine. It resembles a tunnel, a drift, or a shaft, depending on its
inclination. Kentucky
a. The resistance of any inclined surface, as the wall of an open pit or
cut, to failure by sliding or collapsing.
b. The resistance of a natural or artificial slope or other inclined
surface to failure by landsliding. AGI
a. Stake set at the point where the finished side slope of an excavation
or embankment cuts the surface of the ground. It is usually placed on a
line at right angles to the center line and passing through the station
point. Seelye, 2
b. A stake marking the line where a cut or fill meets the original grade.
Nichols, 1
Marking the ground surface by pegs at points where proposed new slopes in
cut or fill coincide with the orginal surface. Hammond
See:slope engineer
A test to determine whether, and to what extent, the course of a well
deviates from vertical. Syn:angularity test
A loss occurring when there is a fluid in the pores of the rock. This loss
arises from the relative movement of the fluid and solid as the elastic
waves pass through the rock. Wyllie
A narrow, vertical opening generally too small to permit traverse by a
person. AGI
A special rod designed for use in roof bolting. It consists of a mild
steel rod, threaded at one end, the other end being split into halves for
a length of about 5 in (12.7 cm). When the bolt is driven into the hole, a
wedge opens the slotted end, thus forming the anchorage. See also:bolt;
wedge-and-sleeve bolt. Nelson
A method of moving large quantities of material with a bulldozer. Each
trip is made in the same path; thus the spillage from the sides of the
blade builds up along each side. All material pushed into the slot is
retained in front of the blade; bigger loads are handled. Nelson
An instrument for sampling airborne dust consisting of a wide horizontal
duct through which mine air enters in a streamline flow, so that dust
particles will be deposited on the duct floor according to their falling
speeds as derived from Stokes' law. The instrument combines the duties of
monitoring and measuring airborne dust concentrations in mine roadways.
See also:thermal precipitator
Fragmentary rock material that has crumbled and fallen away from the sides
of a borehole or mine working. It may obstruct a borehole or be washed out
during circulation of the drilling mud. Pron: sluff. AGI
Minor face and rib falls. Coal Age, 3
Large cone (e.g., Callow) in pulp flow line designed to remove fine slimes
as overflow while delivering a thickened spigot product containing the
coarser particles. Pryor, 3
a. Corn. The outcrop or back of a lode. This generally applies to the
appearance of a lode in a marshy place.
b. A gallery in a mine; day level; esp. applied to damp places.
Standard, 2
An appliance for use in conjunction with the Lilly controller for
controlling the landing speed of less than 5 ft/s (1.52 m/s) when workers
are being transported by winding. On each dial of the Lilly controller, an
auxiliary dial is bolted to carry a slow-banking cam engaging near the end
of the wind with a roller arm. The action of the appliance depends on the
relative rate of movement of this roller and that of the piston in an oil
dashpot cylinder. Sinclair, 5
a. When applied to speed at which the drill motor rotates the drill stem,
the transmission gear position giving the lowest number of bit revolutions
per minute; thus, slow gear corresponds to low gear in an automobile.
Long
b. When applied to a screwfeed-type drill, the pair of feed gears in the
feed mechanism that advances the bit the least amount for each revolution
of drill drive rod and/or the coupled drill stem; e.g., a 400-feed gear is
slower than a 100-feed gear. CF:feed ratio
It consists of a plastic incendiary composition extruded around a central
copper wire. An iron wire is added to give greater strength, and the whole
is then enclosed in a thin extruded plastic coating. The diameter of slow
cord is 0.07 in (1.8 mm). McAdam, 2
Blackpowder, often called gunpowder. Also, some of the slow-acting
dynamites. Nichols, 1
a. Refuse from a coal-washing plant. Standard, 2
b. In diamond drilling, the portion of core ground finely by accident or
defect in drilling, and therefore reducing the reliability of the portion
of the sample in which it happened. Mineral mud, slurry too thick to flow.
Pryor, 3
c. Rock cuttings produced by a drill bit. BS, 9
d. See:cuttings
e. A semifluid, slushy, murky mass of sediment resulting from treatment of
water, sewage, or industrial and mining wastes; often appearing as local
bottom deposits in polluted bodies of water. AGI
f. See:slime