Some articles on nispom:

National Industrial Security Program - NISP Operating Manual (DoD 5220.22-M) - Data Sanitization
... The NISPOM actually covers the entire field of government-industrial security, of which data sanitization is a very small part (about two paragraphs in a 141 page document) ... Furthermore, the NISPOM does not actually specify any particular method ... Unrelated to NISP or NISPOM, NIST also publishes a Data Sanitization standard, including methods to do so ...