NOTICE: Due to a lapse in annual appropriations, most of this website is not being updated. Learn more.
Form submissions will still be accepted but will not receive responses at this time. Sections of this site for programs using non-appropriated funds (such as NVLAP) or those that are excepted from the shutdown (such as CHIPS and NVD) will continue to be updated.
An official website of the United States government
Here’s how you know
Official websites use .gov
A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
A massive tornado, rated category EF5 (the most powerful on the Enhanced Fujita scale), hit Joplin, Mo., on May 22, 2011. According to the U.S. Army Corps of
El Instituto Nacional de Estándares y Tecnología (NIST) ha publicado un informe que resume el progreso de su estudio de varios años sobre los impactos del