R. Meyer J. Köhler A. Homburg Explosives

215 Miniaturized Detonating Cord
Microballoons
Microspheres
Microballoons are bubbles with an average diameter of 40 µm (range
10–100 µm). They were originally used as a filler to control the density
of plastic products. They are available as glass or plastic material.
Microballoons have proved to produce a fine gas bubble distribution in
low-sensitivity explosives, particularly in emulsion slurries. Finely distributed
gas bubbles considerably increase the sensitivity to detonation
(“hot spots”). In the form of microballoons, gas distribution stabilises;
gas distributions without enclosure may experience a loss in
effectiveness as a result of coagulation into coarse bubbles, or by
escape.
Millisecond Delay Blasting
Millisekunden-Sprengen; tir à microretard
The explosive charges are successively initiated at time intervals as
short as 20–100 milliseconds with the aid of millisecond detonators
(W Bridgewire Detonators, W Dynatronic).
Experience shows that rock fragmentation is better with this technique,
and a smaller amount of explosive is required to produce the
same blasting effect since there is better mutual support of the
charges.
Minex
A cast explosive charge used in the USA consisting of RDX, TNT,
ammonium nitrate, and aluminum powder.
Miniaturized Detonating Cord
Mild detonating fuse; nicht-sprengkräftige detonierende Zündschnur;
cordeau détonant miniaturé
Detonating cord with a core load of 5 or less grains of explosive per
foot (≤0.1 g/m).