A variety of hydrocarbon found in lignite. According to Hintz it is
identical with hartite. Tomkeieff
Clintonite found as monoclinic hexagonal-shaped prisms in metamorphosed
limestone.
A monoclinic mineral, (U,Ca,Y,Ce)(Ti,Fe)2 O6 ; radioactive;
commonly metamict; in placers of the Stanley Basin, UT.
Brittle shale (the coal miner's "slate") interbedded with thin coalbeds;
also, the roof of the Pittsburgh coal in western Maryland.
See also:rashings
A paste made by mixing powdered charcoal, coal, or coke with clay,
molasses, tar, or other suitable substance. Used for lining hearths,
crucibles, etc. Syn:steep
A crucible lined with charcoal or lampblack, and used for the reduction of
oxides of metals to the metallic state. The crucible is prepared by
ramming it full of lampblack or charcoal, and then excavating a portion of
its contents and polishing the lining with a burnisher. Fay
Nodular pyrite. Fay
Mineral impurities in coal, of yellow metallic appearance, consisting
mainly of iron sulfides. Syn:brances; brassyn. BS, 4
A disease affecting the general system, characterized by chronic poisoning
from inhalation of metallic fumes, with symptoms like those of malarial
fever. Standard, 2
One of two kinds of furnaces for the making and founding of brass: (1) a
reverberatory furnace for producing large quantities of the alloy, or (2)
a crucible furnace for producing small quantities. Fay
a. An early name for a mixture of sphalerite and chalcopyrite.
Hess
b. An old name for aurichalcite.
See:brasses
Aust. The top part of the Greta coal seam, in which there are large
quantities of sulfide of iron.
a. Ventilating partition, usually of coated fabric, used to direct air to
various faces to remove gas and dust.
b. A board or plank lining, or other partition, in any mine passage to
confine the air and force it into the working places. Its object is to
keep the intake air from finding its way by a short route into the return
airway. Temporary brattices are often made of cloth. Also spelled
braddish; brettice; brettis; brattish. See also:brattice cloth
c. An airtight partition in a mine shaft to separate intake from return
air. See also:screen
d. Used as jumpers for removing gas from a roof cavity. Nelson
e. To provide with a brattice for separation or support; often used with
up. Syn:brattice up
a. Fire-resistant fabric, usually coated, used to erect a brattice.
b. A heavy canvas, often covered with some waterproofing material, for
temporarily forcing the air into the face of a breast or heading; also
used in place of doors on gangways; then known as "sheets."
Syn:brettice cloth
In mining, a worker who builds doors, stoppings and curtains (ventilation
walls or partitions in active workplaces) of burlap, canvas, and wood.
Also called airman; braddisher; braddish man; canvasman; doorman;
ventilation man. DOT
A road through the goaf supported by chocks or timber packs.
A curtain or screen of flexible material used to direct or control the
flow of ventilating air. See also:brattice cloth; sheets. BS, 8
See:brattice
See:airman
See:brattice