>=20 > On Sep 22, 2013, at 8:05 AM, Mark Hanchey wrote: >=20 > On 9/21/2013 4:32 PM, enkitec@gmail.com wrote: >> http://www.usatoday.com/story/news/nation/2013/09/20/north-carolina-atom= ic-bomb/2845381/ >>=20 >> Mark Jordan >=20 > It is old news . While 3 of the 4 safety mechanisms failed it still=20 > would not have gone off because the last switch is something that has =20 > zero chance of ever contacting by accident, even in an explosion. I=20 > can't give exact details because of prior knowledge but picture a switch= =20 > that has to be operated like a combination lock for the switch to close=20 > contacts. >=20 Old news perhaps ...... zero chance of contacting by accident.... 0.000% i= s a reassuring claim. Mark.... are you saying this switch could not be for= ced to close by high G forces or by being crushed ? I guess that is what y= ou are saying since you say the switch is not vulnerable to an explosion. = I keep thinking about the wires that lead to and from this switch...... or = is everything ( including the detonator ) encased in armor ? Gus --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .