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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.


Goma-2 explosive is a mixture of several chemicals:

Although it is a high-explosive detonators are needed to cause a detonation (usually TATP or HMTD).

Terrorist use[edit]

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.

External links[edit]