**WARNING** — READ BEFORE CONTINUING TO THE MATERIALS SECURITY TOOLBOX

This is an official United States Government Web site, which may be accessed and used only for official Government business by authorized personnel who have been individually registered for this site. Unauthorized access or use of this Web site may subject violators to criminal, civil, and/or administrative action.

Information held within Materials Security Toolbox and the associated discussion board (Message Board) may contain sensitive information. Such information is not intended for public distribution and should be protected accordingly by each user. At no time is Classified or Safeguards Information (SGI, or SGI-M) to be discussed, posted, or included within the Materials Security Toolbox or Message Board discussion threads. It is the responsibility of each user to ensure the appropriate handling of information.

Discussions threads within Message Board are expected to be submitted in a professional and orderly manner, while maintaining information security. The administrator of the discussion board reserves the authority to suspend a user's access following an abuse of the system, unprofessional conduct, or discussion of Safeguards or Classified information, and if necessary, to report such actions to appropriate authorities. Any of the previous actions should be reported immediately to the Materials Security Toolbox Administrator Matthew.Barrett@nrc.gov. Access or use of this web site by any person constitutes consent to these terms.