Gelignite (), also known as blasting gelatin or simply " jelly", is an explosive material consisting of collodion-cotton (a type of nitrocellulose or guncotton) dissolved in either nitroglycerine or nitroglycol and mixed with wood pulp and saltpetre (sodium nitrate or potassium nitrate).
It was invented in 1875 by Swedish chemist Alfred Nobel, who also invented dynamite. It is more stable than dynamite, but can still suffer from "sweating" or leaching out nitroglycerine.
Its composition makes it easily moldable and safe to handle without protection, as long as it is not near anything capable of detonating it.One of the cheapest explosives, it burns slowly and cannot explode without a detonator, so it can be stored safely. Irish Industrial Explosives Limited website; accessed 28 July 2014.
In the United Kingdom, an explosives certificate, issued by the local Chief Officer of Police, is required for possession of gelignite.CITB Construction Ste safety, A13 Statutory Forms Due to its widespread civilian use in Quarry and mining, it has historically been used by rebel groups such as Mudiad Amddiffyn Cymru,
the Provisional Irish Republican Army and the Ulster Volunteer Force who often used gelignite as a Booster charge.
However, the Provisional Irish Republican Army (PIRA) indirectly acquired amounts of the material. At the time of Patrick Magee's arrest on 22 June 1985, was found in his possession,Stewart Tendler, "Brighton charge: man in court today", The Times, 1 July 1985. while was discovered in a Truck hijacking road tanker in January 1976.Christopher Walker, "Dublin Government embarrassed by Ulster explosives haul as hunt for source continues", The Times, 20 January 1976. Gelignite material stolen by the IRA from quarries, farms and construction sites in the Republic was among the of explosives detonated in Northern Ireland in the first six months of 1973 alone.
PIRA volunteer, later informer, Sean O'Callaghan estimated that planting of Frangex would kill everyone within an radius.Whitaker, James, "John and Norma Aghast at Wedding", The Daily Mirror, 23 May 1998; accessed 23 June 2015. The Real IRA (RIRA) also acquired Frangex, and, in December 2000, eighty sticks were discovered on a farm in Kilmacow, near Waterford. "Man Released After Explosives Questioning", BBC News; accessed 30 August 2019.
In early 1982 the Irish National Liberation Army stole of Frangex commercial explosives from the Tara mines in County Tipperary, enabling the organisation to intensify its bombing campaign.Jack Holland & Henry McDonald. INLA: Deadly Divisions. pp. 212-215. The INLA carried out its deadliest attack in December 1982 with the bombing of the Droppin' Well disco in Ballykelly, County Londonderry, which catered to British military personnel, in which 11 soldiers on leave and six civilians were killed. A bomb, estimated to be of Frangex explosive, small enough to fit into a handbag, was left beside a support pillar and brought down the roof when it exploded. "Emotional reminder of Droppin' Well bombing" (). Irish News. 5 December 2002. Retrieved 7 April 2011.
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