Although plastic bottle manufacturers attempted to alter their cap designs years ago to stop them from being used for dry ice bombs, the modifications didn’t do much. A few dry ice pellets dropped into a small amount of warm water quickly sublimate (change from liquid to gas), producing an enormous amount of pressure on the walls of the plastic bottle-eventually, causing it to explode. The simplicity of the construction is thanks to the power of dry ice, a solid form of carbon dioxide that freezes at minus 78 degrees Celsius. A wikiHow page spells out exactly how to make one in just four steps-one of which is simply to watch it explode. Dating even further back, Jill Mery Levy’s 2006 edition of The First Responder’s Field Guide to Hazmat and Terrorism Emergency Responses includes a section titled “Acid Bombs and Dry Ice Bombs.” In it, the author instructs responders to look for “heavy frosting” on the outside of a plastic bottle as a warning sign for a potential terrorist’s dry ice bomb.ĭancing on the line between legal and illegal, they’re fair game for recreational explosive users. An abundance of YouTube videos of teenage boys giggling while detonating a Mountain Dew bottle filled with dry ice suggest that 2009 was really the bomb’s prime. Nor are they anything new, contrary to what the recent spin in the headlines implies.
Dry ice bombs-in most states-aren’t either. No one will ask whether you plan to use it for a spooky steaming cauldron (the rising water vapors create a great fog effect) or an airport bomb. Because Halloween is coming up, now is an easier time than ever to walk into your local dairy store and buy a pound of dry ice without raising any eyebrows.
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