Goma-2
Goma-2 Eco is a type of high explosive manufactured for industrial use (chiefly mining) by Unión Española de Explosivos S.A.
It is a gelatinous, Nitroglycol-based explosive widely used within Spain and exported abroad. It was used by ETA in the 1980s and 1990s.
There are two variants of Goma-2: Goma-2 EC and Goma-2 ECO.
Properties
Goma-2 explosive is a mixture of several chemicals:
- Ammonium Nitrate - 60-70%
- EGDN - 26-31%
- Cotton - 4-9%
Although it is a high-explosive detonators are needed to cause a detonation (usually TATP or HMTD).
Terrorist use
Goma-2 ECO was the explosive that was used in the 2004 Madrid train bombings. Terrorist Jamal Ahmidan, also known as El Chino, bought the explosive illegaly from a mine in northern Spain. It was also planned by the same cell that carried out the Madrid bombings to use the explosive to derail a high-speed train. About 80 kilograms of the explosive was used by ETA in Operation Ogro to assasinate Luis Carrero Blanco.The explosion was so powerful it threw Blanco's car over a five storey building.