These substances got mixed up with water from the deluge system that cooled down the launch pad and the rocket. The massive cloud generated during liftoff contained rather reactive chemicals such as hydrochloric acid and aluminum oxide. Some rather strange occurrences were reported after space shuttle launches. Most well known are possibly the solid rocket boosters of NASA's space shuttles, which burned a mixture of aluminum and ammonia, and were not exactly an environmental win. Solid rocket motors (SRMs) help many heavy-lift rockets off the ground. Solid Rocket Motors: Particle factories that produce acid rains, ozone holes
