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Boston Marathon bomb devices were pressure cookers filled with nails, ball bearings: report – New York Daily News
A teacher I had in the 1960s, who had served in Vietnam, stated that the USAF would drop thousands of ball bearings out of the back of C-130's over the jungles of
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What is shrapnel? Bomb fragments that cause terrible injuries and can include nails, metal shards and ball bearings | The Sun
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Pop Mech Defense on Twitter: "Rusty nail and ball bearing pipe bomb, one of many cool weapons in a prop supplier arsenal: http://t.co/59PF0ZmNmU http://t.co/VMkZixs1X4" / Twitter
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Behaviour of a blast-driven ball bearing embedded in rear detonated cylindrical explosive - ScienceDirect
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