Goma-2 was a type of high explosive manufactured for industrial use (chiefly mining) by Unión Española de Explosivos S.A.
As of 2017, the manufacturer MAXAM Corp. S. L. has reformulated the Goma-type ammonia gelatine dynamites which are marketed worldwide under the new Riodin trade name.
Terrorist Jamal Ahmidan, also known as El Chino, bought the explosive illegally 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.
In 1973, about 80 kilograms of the explosive was used by ETA in Operation Ogro to assassinate Luis Carrero Blanco.