Geology as applied to engineering practice, esp. mining and civil
engineering. As defined by the Association of Engineering Geologists
(1969), it is the application of geologic data, techniques, and principles
to the study of naturally occurring rock and soil materials or ground
water for the purpose of ensuring that geologic factors affecting the
location, planning, design, construction, operation, and maintenance of
engineering structures, and the development of ground-water resources, are
properly recognized and adequately interpreted, utilized, and presented
for use in engineering practice. Syn:geologic engineering
Any member of any assemblage of members such as a composite column, a
coupling, a truss, or other structure.
Eng.; Scot. A shaft used entirely for pumping purposes.
a. A system of rope haulage in which the loads are raised or lowered on
the slope by a steam or electric hoist. In the simplest form only one
track and one rope are required, and power is used for raising the load.
Double engine planes have two separate tracks or three rails and a passing
turnout. Lewis
b. A roadway, horizontal or inclined, on which tubs or cars are hauled by
rope haulage. Nelson
c. Direct rope haulage. Pryor, 3
N. Staff. See:brakeman
A method of refining silver in which a small reverberatory furnace with a
movable bed and a fixed roof is used. The bullion is charged gradually,
and the silver is refined in the same furnace where the cupellation is
carried on.
An orthorhombic mineral, K3 Na2 Ca10 Al15 (PO
4 )21 (OH)7 .26H2 O ; occurs with crandallite,
wardite, and other phosphate minerals in variscite nodules at Fairfield,
UT, and in the Tip Top pegmatite, SD.
A method of smelting lead ore in which the characteristics are a large
charge of lead ore, a quick roasting, a high temperature throughout, and
the aim to extract all the lead in the reverberatory. The hearth inclines
toward the middle of one of the sides, the lead collects in the furnace
and is tapped at intervals into an outside kettle. Fay
In copper smelting, the process of reduction in a reverberatory furnace,
after roasting, if necessary.
A furnace in which zinc is reduced and distilled from calcined ores in
crucibles. Fay
The clogging of a furnace. Fay
a. A mineral or rock having cavities containing water.
b. See:enhydros
A hollow nodule or geode of chalcedony containing water, possibly in large
amounts. Syn:enhydrite
Containing water; having drops of included fluid; as enhydrous chalcedony.
Standard, 2
See:aenigmatite
Boreholes driven after the face of the rock has been unkeyed, and two or
three free faces have thus been provided. Stauffer
A conveyor comprising a series of skeleton or solid flights on an endless
chain or other linkage that operates in horizontal, inclined, or vertical
paths within a closely fitted casing for the carrying run. The bulk
material is conveyed and elevated en masse in a substantially continuous
stream with a full cross section of the casing. Also called chain
conveyor. Syn:continuous stream conveyor
See:uranium
Ensign-Bickford hot-wire lighter
A fuse lighter similar to a Fourth-of-July sparkler, that burns for 2-1/2
min, sufficient time to light 30 to 50 fuses. The lead splitter is a lead
tube of diameter about 1/8 in (3.2 mm) in filled with a slow-burning
powder that burns at the rate of 36 s/ft (118 s/m) with a hot splitting
flame. Lewis