A sediment that has been converted into rock by compaction, deposition of
cement in pore spaces, or by physical and chemical changes in the
constituents.
a. Any process whereby loosely aggregated, soft, or liquid earth materials
become firm and coherent rock; specif. the solidification of a magma to
form an igneous rock, or the lithification of loose sediments to form a
sedimentary rock. AGI
b. The gradual reduction in volume and increase in density of a soil mass
in response to increased load or effective compressive stress; e.g., the
squeezing of fluids from pore spaces. See also:lithification
AGI
Borehole into which chemical solutions or grout are injected to cement or
consolidate fragmental rock material. CF:grout hole
The gradual settlement of loaded clay. Nelson
A test in which an undisturbed sample of clay measuring 6 cm in diameter
and 2 cm thick is confined laterally in a metal ring and compressed
between two porous plates that are kept saturated with water. A load is
applied and the clay consolidates, the excess pore water escaping through
the porous stones. After each increment of load is applied, it is allowed
to remain on the sample until equilibrium is established, and a
consolidation curve showing the deformation with time is obtained for each
increment. Nelson
During closing of bed or particles in the suction half of jigging cycle,
interstitial burrowing down of fastest moving small particles before the
mass of particles becomes too compact for movement. Pryor, 3
A group of copper-nickel alloys containing 45% to 60% copper with minor
amounts of iron and manganese, and characterized by relatively constant
electrical resistivity irrespective of temperature; used in resistors and
thermocouples. ASM, 1
A systematic error that is the same in both magnitude and sign throughout
a given series of observations (the observational conditions remaining
unchanged) and that tends to have the same effect upon all the
observations of the series or part thereof under consideration; e.g., the
index error of a precision instrument. AGI
a. An automatic device that maintains a constant rate of feed of ore from
the bin or stockpile to the grinding circuit. It is controlled by tilt due
to the weight of ore on a balanced length of the belt conveyor; by
electrically vibrated chute; by pusher gear; by timed delivery from
automatically loaded hoppers. Pryor, 3
b. A feeder intended to deliver a certain weight per unit of time.
ACSG, 2
Constituents are the petrographic entities of the attritus that are
recognizable in thin sections only by the microscope. The following
constituents may be distinguished in coals: translucent humic degradation
matter; brown or semitranslucent matter; opaque matter (granular,
massive); resins and resinous matter; spores and pollen; cuticles and
cuticular matter; algae and algae matter. IHCP
Transformation of a constituent in an alloy; e.g., austenite into
pearlite. Pryor, 3
Water molecules completely bound into a hydrated crystal, e.g., in gypsum,
CaSO4 .2H2 O .
A graphical representation of the temperature and composition limits of
phase fields in an alloy system as they actually exist under the specific
conditions of heating or cooling (synonymous with phase diagram). A
constitution diagram may be an equilibrium diagram, an approximation to an
equilibrium diagram, or a representation of metastable conditions or
phases. CF:equilibrium diagram
A man-made marsh that is designed to be slow-draining so that specific
species will flourish, primarily to replace natural wetlands that have
been drained and filled prior to development. In mining, some constructed
wetlands are designed to fix metals and other contaminants, primarily by
the reduction of metal sulfates to sulfides, or the formation of oxides or
carbonates. When the term is also applied to systems constructed without
plants, they consist of buried substrates through which the contaminated
water is passed under low oxygen or reducing conditions.
That possession that the law annexes to the legal title or ownership of
property, when there is a right to the immediate actual possession of such
property, but no actual possession. Ricketts
A specialist employed in an advisory capacity. Normally, this person does
not manage or direct any operation, and is at the service of the board
rather than of the company's administrative and executive staff.
Pryor, 3
A highly qualified mining engineer with a wide background of experience in
this particular field. The engineer may be asked by a client or company to
examine a property and prepare a report and evaluation or to give advice
or expert evidence in cases of alleged subsidence damage. Nelson
consumable electrode-arc melting
A method of arc melting in which the electrode itself serves to supply the
metal; this method is commonly employed for melting titanium and
zirconium. Newton, 1
To use up; to expend; to waste; as in the chemical and mechanical loss of
mercury in amalgamation.
That portion of a utility charge based on energy actually consumed, as
distinguished from the demand charge. Strock, 2
a. A plane or irregular surface between two types or ages of rock.
AGI
b. The surface of delimitation between a vein and its wall, or country
rock.