The alarm bell which sounded upon Cedre's 10th anniversary as well as the warning bells for the Exxon Valdez and Khark V spills were heard: on 5th July 1990, the meeting of the Interministerial Committee for the Sea approved an ambitious development project, "Eurocedre". Involvement in preparatory studies by no means prevented a strong commitment towards feedback from the Exxon Valdez spill, experimentation and the production of practical guides. Thus the series of 61 chemical response miniguides, launched in 1987, was completed and a guide for local councillors was published. Cedre also took part in response operations in Morocco following the collision of the oil tanker Sea Spirit with the Norwegian gas tanker Hesperus in the Strait of Gibraltar, on 6th August. Later, a structural failure on board the oil tanker Aragon, on 29th December off Madeira, foretold of a busy year in 1991.