19 September 1957: AS Jajal Ledakan Bom Nuklir di Bawah Tanah Pertama di Dunia
Pada tanggal 19 September 1957, Amerika Serikat meledakkan senjata nuklir 1,7 kiloton di terowongan bawah tanah di Nevada Test Site (NTS).
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Source: liputan6.com