Data Destruction Chemical and Physical Methods (Degaussing, Shredding Dust, Chemical Destruction — Occupational Exposure) — outdoor safety profile
Moderate riskData destruction services process millions of hard drives, SSDs, and storage media annually — the US data destruction market reached $5.4 billion in 2023.
What is this product?
Data destruction services process millions of hard drives, SSDs, and storage media annually — the US data destruction market reached $5.4 billion in 2023. Physical shredding of hard drives generates metallic dust containing aluminum, neodymium (rare earth magnets), cobalt (platter magnetic coating), and trace amounts of lead solder — particles 1-100 microns, respirable. OSHA PEL for aluminum dust: 15 mg/m3 total, 5 mg/m3 respirable. Industrial hard drive shredders process 500-2000 drives/hour, generating significant dust loads. Degaussing (magnetic erasure) uses strong magnetic fields (7,000-20,000 Gauss) — no chemical hazard but does not physically destroy media. Chemical data destruction methods (used for SSDs where degaussing is ineffective) include acid dissolution and incineration. NIST SP 800-88 Rev. 1 defines three levels: Clear, Purge, and Destroy. SSD destruction is more complex than HDD — standard shredding may leave recoverable NAND flash chips if particle size exceeds 2mm.
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Platter Coating
Solder
Platter Substrate
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