330-PSA-129-61 (USN 710905):  It’s a Shocktube, Not a Weapon!   A five-pound explosive charge detonated at the apex of this 180-foot conical shocktube can simulate the blast-waves generated by simultaneously firing six of the most destructive blockbusters ever dropped during World War II.  William S. Filler, Naval Ordnance Laboratory physicist who conceived and developed the device, is pictured with the blast simulator at White Oak, Silver Spring, Maryland.  Photograph released June 1961.  (9/22/2015).
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