"How many times erased does DOD want?"

Hi, I'm looking for the news posting with the subject line as above. Poster David Hayes, comp.periphs.scsi, 24 July 91, message-id 1991Jul24.050701.16005@sulaco.lonestar.org. Got no luck with Dejanews, reference.com and Altavista. The topic is data recovery from magnetic media. Also appreciate any pointers to info on same. TIA. Cheers. - PS Ng Pheng Siong <jlumstoi@pacific.net.sg>