| DOE N 251.68PDF | Cancellation of Directive | Archive | HS - Office of Health, Safety and Security | Jan 17, 2007 |
| DOE N 251.69PDF | Cancellation of Directive | Archive | MA - Office of Management | Jul 13, 2007 |
| DOE N 251.7PDF | Cancellation of Directives | Archive | HR - Office of Human Resources | Sep 30, 1995 |
| DOE N 251.70PDF | Cancellation of Directive | Archive | IM - Office of the Chief Information Officer | Aug 14, 2007 |
| DOE N 251.71PDF | Extension of DOE N 470.3 | Archive | HS - Office of Health, Safety and Security | Nov 27, 2007 |
| DOE N 251.72PDF | Cancellation of Directive | Archive | PA - Office of Public Affairs | Dec 6, 2007 |
| DOE N 251.73PDF | Extension of DOE N 206.5, Response and Notification Procedures for Data Breaches Involving Personally Identifiable Information | Archive | MA - Office of Management | Oct 9, 2008 |
| DOE N 251.74PDF | Extension of DOE N 206.4 | Archive | HS - Office of Health, Safety and Security | Nov 24, 2008 |
| DOE N 251.75PDF | Cancellation of Directive | Archive | MA - Office of Management | Jan 13, 2009 |
| DOE N 251.76PDF | Extension of DOE N 234.1, Reporting of Radioactive Sealed Sources | Archive | HS - Office of Health, Safety and Security | Jun 9, 2009 |
| DOE N 251.77PDF | Cancellation of Directives | Archive | MA - Office of Management | Aug 26, 2009 |
| DOE N 251.78PDF | Cancellation of SEN-22-90 | Archive | HS - Office of Health, Safety and Security | Oct 28, 2009 |
| DOE N 251.79PDF | Extension of DOE N 456.1, The Safe Handling of Unbound Engineered Nanoparticles | Archive | HS - Office of Health, Safety and Security | Apr 19, 2010 |
| DOE N 251.8PDF | Cancellation of Directive | Archive | GC - Office of General Counsel | Sep 30, 1995 |
| DOE N 251.80PDF | Cancellation of Directives | Archive | HS - Office of Health, Safety and Security | Jun 4, 2010 |
| DOE N 251.81PDF | Cancellation of DOE G 471.3-1, Guide to Identifying Official Use Only Information | Archive | HS - Office of Health, Safety and Security | Jun 4, 2010 |
| DOE N 251.82PDF | Cancellation of Directives | Archive | HS - Office of Health, Safety and Security | Jun 4, 2010 |
| DOE N 251.83PDF | Cancellation of Directives | Archive | OSTI - Office of Scientific and Technical Information | Jun 16, 2010 |
| DOE N 251.84PDF | Cancellation of DOE M 470.4-7, Safeguards and Security Program References | Archive | HS - Office of Health, Safety and Security | Jun 23, 2010 |
| DOE N 251.85PDF | Cancellation of DOE P 410.1A, Promulgating Nuclear Safety Requirements | Archive | HS - Office of Health, Safety and Security | Jun 23, 2010 |
| DOE N 251.86PDF | Extension of DOE N 234.1, Reporting of Radioactive Sealed Sources | Archive | HS - Office of Health, Safety and Security | Jun 23, 2010 |
| DOE N 251.87PDF | Extension of DOE N 470.4, Reciprocal Recognition of Existing Personnel Security Clearances/Access Authorizations | Archive | HS - Office of Health, Safety and Security | Jul 14, 2010 |
| DOE N 251.88PDF | Cancellation of DOE O 1340.1B | Archive | PA - Office of Public Affairs | Aug 27, 2010 |
| DOE N 251.89PDF | Cancellation of DOE G 573.1-1 | Archive | MA - Office of Management | Sep 30, 2010 |
| DOE N 251.90PDF | Extension of DOE N 470.5 | Archive | HS - Office of Health, Safety and Security | Sep 28, 2010 |