1. PPE Expert Stephen Petty, The Truth About Cloth Masks & N95s (Includes Presentation Slides)

    PPE Expert Stephen Petty, The Truth About Cloth Masks & N95s (Includes Presentation Slides)

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  2. Stephen Petty, Expert, Industrial Hygienist solution far more effective than masks

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  3. CDC workers sick after train crash investigation || Stephen Petty

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  4. Masks DON’T Work! - An Interview with PPE & Exposure Control Expert, Stephen Petty

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  5. How can anyone say it’s safe? Interview with industrial hygienist, Stephen E. Petty, on the testing of the water and air in East Palestine, Ohio

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  6. Industrial Hygienist & PPE Expert Stephen Petty, The Truth About Cloth Masks & N95s

    Industrial Hygienist & PPE Expert Stephen Petty, The Truth About Cloth Masks & N95s

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  7. Stephen Petty - On the effectiveness of Masks

    Stephen Petty - On the effectiveness of Masks

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  8. How Much Protection Can a Mask Provide? Mask vs. PPE - Ep. 05 (Removed from YT)

    How Much Protection Can a Mask Provide? Mask vs. PPE - Ep. 05 (Removed from YT)

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  9. How to Control Exposure to Viruses, Bacteria, and Mold - Ep. 06

    How to Control Exposure to Viruses, Bacteria, and Mold - Ep. 06

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  10. How Dirty Does a Mask Get - Ep. 18

    How Dirty Does a Mask Get - Ep. 18

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  11. Testimony: Industrial Hygienist Stephen Petty

    Testimony: Industrial Hygienist Stephen Petty

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  12. How can anyone say it’s safe? Interview with industrial hygienist, Stephen E. Petty

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  13. Masks: Why They Cannot & Do Not Work - Overview - Ep. 20

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  14. Forget CDCs Slow Motion Move from Masks to N95s – Go Straight To Engineering Controls

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  15. STEPHEN PETTY ON PPE AND AEROSOLS

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