Plastic explosives was used for decades prior to the War as a mining tool, and is still useful for removing inconvenient nature. Like its more primitive cousin, dynamite, plastic explosives are both a tool and a weapon. Typically made from a powerful explosive like Semtex or RDX, with a plasticizer, they are a very stable and malleable compound. Plastic explosives can be rigged to explode with either remote or timer detonators, and can be detonated with other high explosives.
M112 was a common military-grade demolition charge before the Great War. Each block contains 1.25 pounds (~0.56 kilograms) of Composition C-4 explosive material, packed in a Mylar-film container for protection against the environment. Blocks also include taggant, chemicals that will survive detonation and would allow for identifying the type of explosives used.[1] Most packages use four blocks held together by duct tape with a crude rope handle, and a remote detonator.[2]
A package of plastic explosives in an off white wrapper, with a yellow and red label stating "C-4 Caution High Explosive" that appeared in Fallout Tactics. Plastic explosives was cut from Fallout: Brotherhood of Steel at some point during development.