The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.



an explosive mixture that can be made directly at the place of use by mixing granulated or flaked ammonium nitrate with a small amount (5–6 percent) of liquid fuel (usually solar oil).

Igdanit, which is highly friable and has low sensitivity to external effects, is safe to handle and is suitable for mechanized charging. It is triggered by an intermediate detonator made of a more powerful explosive (ammonite, detonit, or a TNT, tetryl, or pentolite cartridge). In the case of pneumatic charging of blastholes and boreholes, the density of the igdanit may be reduced to 1.25 X 10-3 kg/m3, as a result of which igdanit, with a unit energy of 3.8 megajoules per kilogram (904 kcal/kg), can replace ammonites and detonits. It is used for explosive work in quarries (mostly for charging dry wells and the dry part of flooded wells), and also in mines in which there is no gas or dust hazard.


The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.