Richard Rennison Richard Rennison Richard Rennison (29 October 1889 – 5 August 1969) was the last "anvil priest" at Gretna Green, Scotland. Between 1926 and 1940, he performed "irregular marriages" of couples over the anvil at the Old Blacksmith Shop, where the couple proclaimed that they were single and wanted to get married in front of witnesses. As "anvil priest", Rennison generally requested a fee of £1, but was known to earn up to £20 for a ceremony (approximately £3,030 in 2012). The popularity of the marriages grew whilst he was performing them, to the point that a special committee was formed
Thermal runaway have led to catastrophic explosions when reaction control failed. Thermal runaway may result from unwanted exothermic side reaction(s) that begin at higher temperatures, following an initial accidental overheating of the reaction mixture. This scenario was behind the Seveso disaster, where thermal runaway heated a reaction to temperatures such that in addition to the intended 2,4,5-trichlorophenol, poisonous 2,3,7,8-tetrachlorodibenzo-p-dioxin was also produced, and was vented into the environment after the reactor's rupture disk burst. Thermal runaway is most often caused by failure of the reactor vessel's cooling system. Failure of the mixer can result in localized heating, which initiates thermal runaway. Similarly,