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

    CDC workers sick after train crash investigation || Stephen Petty

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

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

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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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  9. Testimony: Industrial Hygienist Stephen Petty

    Testimony: Industrial Hygienist Stephen Petty

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  10. 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

    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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  12. STEPHEN PETTY ON PPE AND AEROSOLS

    STEPHEN PETTY ON PPE AND AEROSOLS

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  15. Stephen Petty-Engineering Expert on Masking

    Stephen Petty-Engineering Expert on Masking

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  16. Covid Revealed – Episode 8B - Bonus Video (Stephen Petty)

    Covid Revealed – Episode 8B - Bonus Video (Stephen Petty)

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  18. 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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  21. Stephen Petty - On the effectiveness of masks

    Stephen Petty - On the effectiveness of masks

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  22. 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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  23. My Experience Getting COVID (After Vaccination) - Ep. 16

    My Experience Getting COVID (After Vaccination) - Ep. 16

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  24. Covid Revealed Episode 8 Bonus - Stephen Petty

    Covid Revealed Episode 8 Bonus - Stephen Petty

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