Rat carcasses were filled with plastic explosives, and were to be distributed near German boiler rooms, where it was expected they would be disposed of by burning, with the subsequent explosion having a chance of causing a boiler explosion.

Rat carcasses were filled with plastic explosives, to be left in locations such as factories where, it was hoped, the stoker tending a boiler would likely dispose of the unpleasant discovery by shoveling it into the furnace, causing it to explode.

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