R. Meyer J. Köhler A. Homburg Explosives

265 Progressive Burning Powder
Primary Blast
Hauptsprengung; tir primaire
A blast that loosens rock ore from its original or natural location in the
ground. A secondary blast may be used to reduce the rocks from the
primary blast to smaller size for ease of handling.
Primary Explosive
Initialsprengstoff; explosif d’amorcage
A sensitive explosive which nearly always detonates by simple ignition
from such means as spark, flame, impact and other primary heat
sources of appropriate magnitude (W Initiating Explosives).
Primer
A primary initiating device to produce a hot flame. A primary stimulus
sensitive component generally is used to generate a brisant output for
initiating detonating compositions. Infrequently used to initiate deflagrating
compositions (W Squib; W Detonator; W Initiator).
Primer Charge
Zündladung; charge d’amorçage
Secondary component in an W Ignition Train, which is ignited by an
initiator, starts pressurization of a generator, and ignites the booster
charge.
For the firing of industrial explosives, primers are prepared by inserting
a blasting cap or an electric detonator in hole of a cartridge of a capsensitive
explosive.
In military ammunition primers are charges used to initiate the main
explosive charge of a weapon containing built in detonators.
Progressive Burning Powder
Progressiv-Pulver; poudre progressive
Gunpowder which burns at a progressively increasing rate, owing to
the appropriate choice of the geometry of the powder grain and
sometimes owing to a suitable grain surface coating. Examples are
perforated powders (7-hole powder, 19-hole-powder, etc.).