15 December 2013, 18:26
Good info from NR.
The rule of thumb only applied to biological and chemical attacks, and the distance required would suitably mean a dilution of the danger 'agent' in the air. But I'm happy to use the rule of thumb as a basic system to go on. There's no harm going further.
The rule of thumb only applied to biological and chemical attacks, and the distance required would suitably mean a dilution of the danger 'agent' in the air. But I'm happy to use the rule of thumb as a basic system to go on. There's no harm going further.
Dissent is the highest form of Patriotism - Thomas Jefferson
Those who sacrifice freedom for security deserve neither - Benjamin Franklin
Those who sacrifice freedom for security deserve neither - Benjamin Franklin