Concepts of Industrial Hygiene: Why Masks Do Not and Can Not Work

Stephen E. Petty

[The] media often rely on M.D.s and not industrial hygienists for information on controlling exposures.

Masking does not work at 3 levels:

  • 100,000 feet
  • epidemiology – ground level
  • micro-scale

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In mid-June 2024 our close friends and allies at Vaccine Choice Canada...

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