Cause of the explosions In April 1991, the TNO Prins Maurits Laboratorium published a report on the Culemborg fireworks disaster, commissioned by the
Ministry of Defence. TNO concluded that relatively light fireworks in large quantities caused an unexpectedly heavy explosion, because they were no longer contained within their
packages. In April 1993, the direct cause of the explosion had still not been discovered, making it unclear whose responsibility it was. Eventually, after much struggle, all parties involved agreed to a compromise regarding repayments. Investigations showed that little to nothing was done with TNO's recommendations, because the ministries and inspection services "had communicated badly with each other, or not at all", Interior Minister
Klaas de Vries admitted in 2001. The 15 January 2001 investigative report of the Firefighting Care and Disaster Control Inspection of the
Ministry of the Interior, titled
Onderzoek vuurwerkramp Enschede. Follow up Culemborg ("Enschede fireworks disaster investigation. Follow up Culemborg"), attempted to answer the question ‘To what extent have the conclusions and recommendations, proceeding from investigation into the 1991 fireworks explosion in Culemborg, resulted in actions?’. The report revealed that the TNO report was first presented to the Ministry of Defence, which serves an advisory role when granting licences to fireworks companies. But the Defence service for Environmental Licences did not consider urging stricter rules to be part of its job. In a 1991 letter, Arnhem-based advocate general Korvinus warned his superiors at the
Ministry of Justice about other fireworks storage facilities throughout the Netherlands, but this ministry did not regard fireworks storage as its task. The Dangerous Substance Accident Control service from the Interior Ministry did seek to introduce stricter regulations for fireworks, which was discussed in several meetings of the Commissie Preventie Rampen door gevaarlijke stoffen (CPR, Dangerous Substances-borne Disasters Prevention Commission), == See also ==