DoD production Amarillo

35°18'43"N 101°33'41"W Follow Hwy 60 from Amarillo to Panhandle (TX) after appx 11 mi. you will pass the Pantex plant.
This hi-security facility - originally constructed as a conventional bomb plant for the US Army during WW2 - is the US only nuclear weapons assembly & disassembly plant and is charged with maintaining safety, security and reliability of the US nuclear weapons stockpile.

Pantex http://www.pantex.com/Pages/default.aspx

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