a. Impure steatite or massive talc; used in prehistoric times to make
cooking vessels. Also spelled pot stone.
b. See:paramoudra
A skilled craftsperson who fabricates ceramic ware using various forming
techniques.
A term used in early metallurgical practice for an ore that becomes
vitrified by heat, like the glazing of earthenware. Standard, 2
A plastic clay free from iron and devoid of fissility; suitable for
modeling or making of pottery or adapted for use on a potter's wheel. It
is white after burning. AGI
An acute bronchitis often occurring among pottery employees, eventually
affecting the lungs. Standard, 2
A 200-mesh feldspar produced for use by the manufacturers of chinaware,
sanitary ware, ceramic tile, frits, enamel, glazes, electrical insulators,
and vitrified grinding wheels. AIME, 1
The placing of pots, containing either potassium nitrate or sodium nitrate
and sulfuric acid, in the kilns used in the manufacture of sulfuric acid
from sulfurous acid obtained from the combustion of sulfur in air.
Fay
Som. Brown iron ore, Brendon Hills. Apparently a color term, since the two
varieties of ore are black and potty. Arkell
A seismic technique that dispenses with the need for drilling shotholes.
In this air-shooting method, dynamite is exploded in arrays of
simultaneous blasts with charges several feet above the ground. The
principal difficulty involves the hazard of working with aboveground
explosives and the damage to property or to the peace of mind of nearby
inhabitants. Dobrin
Wales. Underclay. Apparently a survival of the obsolete form of puncheon
(punchin)--a supporting timber in a coal mine or in a building floor
timber. Also spelled pounson. Arkell
a. A large, natural fissure or cavity in strata.
b. An underground reservoir of water. See also:lodge
a. A hybrid term between the English and metric units and defined as the
amount of heat required to raise 1 lb (0.454 kg) of water 1 degrees C.
Newton, 1
b. An engineering heat unit, often called centigrade heat unit (chu).
Defined as above. Approx. equal to 1.8 Btu (1.9 kJ). CTD
An ore-mill stamp. Standard, 2
Unit of bending moment being the moment due to a force of 1 lb (0.454 kg)
applied at a distance of 1 ft (30.48 cm). Hammond
In founding: (1) the amount of material, as melted metal, poured at a
time; and (2) the act, process, or operation of pouring melted metal; such
as, make a pour at noon. Standard, 2
A connecting device that is fastened to the end of a cable (wire rope) by
inserting the cable end in a funnel-shaped socket, separating the wires
and filling the socket with molten zinc. Nichols, 1
A basin on top of a mold to receive the molten metal before it enters the
sprue or downgate. ASM, 1
A channel in a mold through which to pour molten metal. Fay
In the steel industry, refractory used for the transfer of steel from
furnace to ingot. Refractories include ladle brick, nozzles, sleeves,
stopper heads, mold plugs, hot tops, and mortars used for the brickwork
involved. AISI