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In the Civil War, at this site, E. Krauskoff, gunsmith, and Adolph Lungkwitz, silversmith, made gun caps. Inventing machinery, they rolled copper thin and cut it to cap-size pieces. Saltpetre and quicksilver went into the caps, to detonate rifle and pistol ammunition. Saltpetre came from nearby bat caves. Quicksilver and copper had to be brought through neutral Mexico or the coastal blockade. Rifles, cannon, gunpowder and pistols were made at Austin, Houston, Bastrop, Waxahachie, san Antonio, corpus Christi, Burnet, Lancaster, Rusk and Tyler.

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