US Department of Defense clearing and sanitizing standard DoD 5220.22-M) Hard Drive and Dat Tape degaussing Hard Drive and Platter Destruction CDROM and DVD Shredding, Perforation, and Declassifying Floppy Disk Shredding Video Cassettes Shredding Carbon Tapes Shredding Electronic Circuit Boards Shredding DAT Cassette Shredding Paper File Shredding Credit, Debit, and Calling Card Shredding