One of the small refractory-lined chambers, built wholly or partly in the
wall of a kiln, for combustion of the fuel. Dodd
A strip across the area in which no combustible material is employed, or
in which, if timber supports are used, sand (not waste rock) is later
filled and packed tightly around them. Where timber is not used in stope
supports, the firebreaks are simply stretches in the levels or winzes in
which timber lagging is replaced by some other substance, such as steel or
concrete. Spalding
S. Staff. Said of any place underground showing indications of a gob fire.
Fay
a. Bricks made from a very refractory clay to withstand intense heat.
Mersereau, 2
b. An aluminosilicate brick of fire-clay composition. Van Vlack
The separating low wall between the fireplace and the hearth of a
reverberatory furnace. Fay
The following explains the National Fire Protection Association
classifications. Class A fires are defined as those in ordinary solid,
combustible materials, such as coal, wood, rubber, textiles, paper, and
rubbish. Class B fires are defined as those in flammable liquids, such as
fuel or lubricating oils, grease, paint, varnish, and lacquer. Class C
fires are defined as those in (live) electric equipment, such as
oil-filled transformers, generators, motors, switch panels, circuit
breakers, insulated electrical conductors, and other electrical devices.
USBM, 3
a. A siliceous clay rich in hydrous aluminum silicates, capable of
withstanding high temperatures without deforming, disintegrating, or
becoming soft and pasty. It is deficient in iron, calcium, and alkalies,
and approaches kaolin in composition, the better grades containing at
least 35% alumina when fired. AGI
b. A term formerly, but inaccurately, used for underclay. Although many
fireclays commonly occur as underclays, not all fireclays carry a roof of
coal and not all underclays are refractory. Syn:firestone;
refractory clay. See also:sagger; underclay. AGI
Eng. Said of a mine when an explosion of combustible gases has taken
place.
a. A combustible gas that is formed in mines by decomposition of coal or
other carbonaceous matter and that consists chiefly of methane; also the
explosive mixture formed by this gas with air. The term "combustible
gases" is now used for firedamp. Webster 3rd
b. A stone, brick, or concrete airtight stopping to isolate an underground
fire, and to prevent the inflow of fresh air and the outflow of foul air.
See also:seal; methane. Nelson
a. A fireproof door in a building or in a mine, as a door to enclose an
area in which there is a mine fire. Fay
b. The door or opening through which fuel is supplied to a furnace or
stove. Fay
Certain gems, e.g., zircon, topaz, or corundum, can be heated under
controlled conditions to change their color to one that is more
attractive. See also:heated stone
a. An apparatus for feeding the fire of a furnace. Fay
b. A stoker.
A plan or chart showing the positions of items of firefighting equipment.
Separate plans are used for surface buildings and underground workings.
BS, 7
The grate that holds the fuel in many forms of heaters and furnaces.
Fay
Eng. Words marked upon the scale of a mercurial barometer to indicate when
considerable combustible gases may be expected to be given off in the
mine, and to show that extra vigilance is required to keep the ventilation
up to its full strength.
An oven or place for heating anything. Fay
a. In a metal mine, a miner whose duty it is to explode the charges of
explosive used in headings and working places. CTD
b. In a fiery mine, the official who checks the underground explosive
risk. Pryor, 3
c. In a coal mine, an official responsible for safety conditions
underground. See also:deputy
d. Eng. A person whose duty it is to examine with a safety lamp the
underground workings, (1) to ascertain if gas is present, (2) to see that
doors, bratticing, stoppings, etc., are in good order, and (3) generally
to see that the ventilation is efficient. See also:fire boss;
gas watchman.
See:lumachelle
A transparent to translucent yellow, orange, red, or brown variety of opal
that gives out fiery reflections in bright light with or without a play of
color. CF:gold opal
Copper that has been refined by the use of a furnace process only,
including refinery shapes and, by extension, fabricator's products made
therefrom. Usually when this term is used alone, it refers to
fire-refined, tough pitch copper without elements other than oxygen being
present in significant amounts. See also:fire refining
Includes a number of processes used for the removal of impurities from
impure metals produced by the smelting process. Impurities are removed by
introducing air into the molten metal or exposing the metal to air, and by
the addition of various fluxes and the removal of impurities as gases,
drosses, or liquid slags. Lead, tin, and some types of impure copper are
also fire-refined. Kirk