18th Century, Dynamite in Silver Mines
From the 16th to the 18th century, Mexico stood as the world's largest producer of silver. Miners working in these vast silver mines initially used explosives wrapped in paper. However, paper was a costly material. They soon discovered a more practical alternative: corn tortillas. Tortillas were not only readily available and inexpensive but also possessed the necessary strength and water resistance. Miners began wrapping gunpowder in these tortillas to create charges for blasting through rock formations and silver veins. This innovative, stick-shaped explosive device became known as a "taco."