TIL: During the Civil War, the Confederate army used bat guano, 2.500 pounds a day during the mining operation, to make gunpowder.

Read more: https://www.tshaonline.org/handbook/entries/confederate-bat-guano-kiln-new-braunfels

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  1. Look up the Guano Islands Act (1856).

    A law from the same era that allowed any US citizen to claim an island covered in bird poop so long as it was uninhabited and not claimed by another country.

    Guano for gun powder was a big thing… and still is. The law is still in use.

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