In glassmaking, a long iron rod for either drawing out glass or twisting
it to a fine thread.
A general term for explosives including dynamite, but excluding caps.
Nichols, 1
A barrel made for the conveyance of gunpowder, usually holding 100 lb
(45.4 kg). CF:powder keg
A wooden box in a miner's breast or chamber, in which were kept black
powder, cartridge paper, cartridge stick, squibs, lampwick, chalk, and
tools. Syn:tool box
See:powder monkey
A substantial, nonconductive portable container equipped with a lid and
used temporarily at blasting sites for storage of explosives other than
blasting agents. Unused explosives are returned to the magazine at the end
of the shift. Syn:day box
Coal that has been crushed fine; may be transported by air to fire a
boiler or industrial heating furnace. BCI
Aust. Ore disseminated with veinstuff.
An explosive containing still smaller quantities of liquid products,
compared with plastic and semiplastic explosives, so that the spaces
between the solid particles are not filled out entirely. As the result of
this, the density of the mass is 20% to 40% lower than that of plastic and
semiplastic explosives. Fraenkel
The quantity of explosive used per unit of rock blasted, measured in lb/yd
3 (kg/m3 ) per ton (metric ton) of rock.
A magazine for the temporary storage of explosives. See also:magazine
A small metal keg for black blasting powder, usually having a capacity
sufficient for 25 lb (13.5 kg) of powder. CF:powder barrel
a. A person in charge of explosives in an operation of any nature
requiring their use.
b. In bituminous coal mining and metal mining, one who handles proper
storage of explosives in a powder house at a mine and issues powder,
dynamite, caps, detonators, and fuses to miners as needed. At smaller
mines, may deliver explosives to miners at working places. Also called
powder monkey. See also:blaster
See:powder monkey
As used in the diamond-drilling industry, the finely divided particles of
iron, copper, nickel, zinc, tungsten carbide, etc., which, when mixed with
a suitable binding material and subjected to processing by heat and
pressure, may be used as a matrix material to form a bit crown.
Long
Any diamond bit, mechanically set, in which finely divided metal powders
are used as a matrix to hold the diamonds in place. Also called
powder-pressed bit; powder-set bit; sinter bit; sintered-metal bit.
Long
The art of producing and utilizing metal powders for the production of
massive materials and shaped objects. ASM, 1
A metallurgical technique in which metal powder is pressed into a desired
shape.
The process of mechanically setting diamonds in a bit in a matrix of
finely divided metal powders. The metal powder is first cold pressed to
compact it in a bit mold or die and then heated to allow the bonding alloy
to melt and bind the powder to the diamonds and bit blank. Hot pressing or
coining follows heating of the powder in some modifications of the
process. Long
An excavation filled with powder for the purpose of blasting rocks.
Fay
a. A person employed at the powder house of a coal mine whose duty is to
deliver powder to the miners.
b. In some metal mines, the person who distributes powder, dynamite, and
fuses to the miners at the working faces. This is a nautical term, but is
frequently used in the mining industry.
c. In the quarry industry, one who carries powder or other explosives to
the blaster and assists by placing prepared explosive in a hole,
connecting a lead wire to a blasting machine, and performing other duties
as directed. Also called blaster helper; powder carrier; powderman helper.
See also:powderman