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[i]The presence of both fuels created a volatile combination. Later, after the crashes of LLRV No. 1 and LLTV No. 1, Deke Slayton–director of flight crew operations at the MSC–changed the policy regarding the role of firemen and other personnel. His comments are revealing:
Hydrogen peroxide [H2O2] and JP-4 [jet fuel] make an extremely hazardous combination that has proven to be not only inflammable and self-igniting, but also shock sensitive, i.e., it will explode, releasing energy equivalent of dynamite. We have had two incidents where just a few ounces of 90 percent H2O2 was sprayed on a JP-4-soaked rag during a demonstration and it detonated of its own accord, rattling nearby windows. Besides the H2O2/JP-4 hazard, the vehicle has 4000 psi He [helium] pressure and lesser pressures that are just as dangerous as explosives when their containers have been subjected to structural and heat damage.[/i]
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