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Bulletproofing
Bulletproofing is the process of making something capable of stopping a bullet or similar high velocity projectiles e.g. shrapnel. The term bullet resistance is often preferred because few, if any, practical materials provide complete protection against all types of bullets, or multiple hits in the same location.
== Origins==
In 1887, Dr. George E. Goodfellow of Tombstone, Arizona Territory, documented three cases where bullets had failed to penetrate silk articles of clothing. He described the shooting death of Charlie Storms by gambler Luke Short. Although shot in the heart, "not a drop of blood" exited Charlie Storms' wound. Goodfellow found a silk handkerchief had stopped the bullet. Another was the killing of Billy Grounds by Assistant City Marshal Billy Breakenridge. Goodfellow examined Billy and found that two buckshot grains had penetrated Billy's thick Mexican felt hat band embroidered with silver wire, penetrating his head and flattened against the posterior wall of the skull. Another of the grains had passed through two heavy wool shirts and a blanket-lined canvas coat and vest before coming to rest deep in his chest. But Goodfellow was fascinated to find in the folds of a Chinese silk neckerchief around Grounds' neck two shotgun pellets but no holes and no wounds.〔〔 And he described a wound to Curly Bill Brocius who had been shot through the right side of the neck, narrowly missing his carotid artery. A portion of his silk neckerchief was carried into the wound by the bullet, preventing a more serious injury, but the scarf was undamaged.〔 ''The Tombstone Epitaph'' reported, "A silken armor may be the next invention."
Goodfellow wrote an article for the ''Southern California Practitioner'' titled "Notes on the Impenetrability of Silk to Bullets".〔(【引用サイトリンク】url=http://societyoftheoldwest.ning.com/forum/topics/dr-george-goodfellow )〕 He experimented with designs for bullet-resistant clothing made of multiple layers of silk. By 1900, gangsters were wearing $800 silk vests to protect themselves. So that's when the got the idea and made the bullet proof gel.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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