A side-bump table having a surface made of a plane, endless, traveling
belt. The Corning, Luhrig, and Stein tables are similar. Liddell
A monoclinic mineral, Fe2+ Fe3+2 (SO4 )
4 .22H2 O ; hallotrichite group; white to yellowish; in
radially fibrous masses.
Aust. A name used in the Clermont district of Queensland for a bed of
quartzite that caps the coal measures.
Staff. Miners' term for a thin, unworkable coal seam occurring above or
below a workable seam. Tomkeieff
Generic term for porphyritic rocks in which the minerals occur in two
generations. AGI
A container for storing material.
An alloy containing two component elements. ASM, 1
A cycle in which two different media are employed, one superimposed on and
augmenting the cycle of the other. Strock, 2
An explosive based on two ingredients, such as nitromethane and ammonium
nitrate, which are shipped and stored separately and mixed at the blast
site to form an explosive mixture.
Two-mica granite.
A chemical system containing two components, e.g., the MgO-SiO2
system. AGI
a. Shale or mudstone occurring in coal measures. Obsolete. BS, 11
b. To prevent normal operation of drill-string equipment in a borehole,
such as by constriction or friction created by swelling or caving ground,
settlement or balling of cuttings, an obstruction, or an offset or crooked
hole, or as the result of insufficient clearance cut by use of undergage
bits or reaming shells. Long
c. To cause to cohere; to give consistency to by means of an agent, such
as by drilling mud in a loose, sandy, or fragmented formation.
Long
d. A British coal miner's term for any fine-grained, well-laminated rock
(such as shale, clay, or mudstone, but not sandstone) associated with
coal. See also:blaes
a. A substance used to produce cohesion in loose aggregate, as the crushed
stones in a macadam road.
b. A material added to coal or iron ore during the process of briquetting
or pelletizing to facilitate adhesion between the particles.
c. Corn. Beds of grit in shale, slate, or clay.
d. Streak of impurity in a coal seam, usually difficult to remove.
e. The material that produces or promotes consolidation in loosely
aggregated sediments; e.g., a mineral cement that is precipitated in the
pore spaces between grains and that holds them together, or a primary clay
matrix that fills the interstices between grains. AGI
f. Soil binder. AGI
g. A term used in Ireland for a bed of sand in shale, slate, or clay.
AGI
h. A coal miner's term used in Pembrokeshire, England, for shale.
AGI
The briquetting of coal by the application of pressure without the
addition of a binder. BS, 5
An isometric mineral, Pb2 Sb2 O6 (O,OH) ; stibiconite
group; yellow to reddish-brown; in the oxidation zone of lead-antimony ore
deposits.
See:anchor bolt
A worker who rods or bars ore that sticks as it passes through the bin
door. Fay
To put coal in wagons or in stacks at the surface. Fay
A device for complete shutoff or control of gravity-impelled flow of
materials from a bin, bunker, hopper, or other container.
Syn:bucket gate; bunker gate. See also:regulating gate
One of many rheological models of material behavior. Rheology is the study
of change in form and the flow of matter, embracing elasticity, viscosity,
and plasticity. A Bingham material is elastic until the yield point is
reached; flow occurs beyond the yield point. SME, 1
Derb. A hole or chute through which ore is thrown.