Charlie and Tupper England wrote:

This might be useful to look up mil spec info. You guys
using 4130 can scare yourselves by entering '4130 steel' in
the search engine.

You can also find info on your nuclear device of choice to
arm your homebuilt.

(I hope the above doesn't trigger a call from Big Brother
NSA.)

http://astimage.daps.dla.mil/quicksearch/

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