Big-Bang Cannon

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The Big-Bang Cannon, also known as the Calcium Cannon,^[1] is an American toy cannon first manufactured in the early 20th-century. Numerous consumer fireworks injuries^[2] convinced a physics professor at Lehigh University in Bethlehem, Pennsylvania to patent a "Gas Gun" in 1907, and the manufacturing of Big-Bang Cannons started in 1912, from the Gas Cannon Company.