text: These bombs sometimes killed family members of ETA's target victim and bystanders. When the bombs were large car-bombs seeking to produce large damage and terror, they were generally announced by one or more telephone calls made to newspapers speaking in the name of ETA. Charities (usually Detente Y Ayuda—DYA) were also used to announce the threat if the bomb was in a populated area. The type of explosives used in these attacks was initially Goma-2 or self-produced ammonal. After several successful robberies in France, ETA began using Titadyne.
  Shells: hand-made mortars (the Jo ta ke model) were occasionally used to attack military or police bases. Their lack of precision was probably the reason their use was discontinued.
  Anonymous threats: often delivered in the Basque Country by placards or graffiti. Such threats forced many people into hiding or exile from the Basque Country and were used to prevent people from freely expressing political ideas other than Basque nationalist ones.
  Extortion or blackmail: called by ETA a "revolutionary tax", demanding money from a business owner in the Basque Country or elsewhere in Spain, under threats to him and his family, up to and including death threats. Occasionally, some French Basques were threatened in this manner, such as footballer Bixente Lizarazu. ETA moved the extorted funds to accounts in Liechtenstein and other fiscal havens. According to French judiciary sources, as of 2008 ETA exacted an estimated €900,000 a year in this manner.