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

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

    37
    0
    1.43K
    2
  3. Stephen Petty, Expert, Industrial Hygienist solution far more effective than masks

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

    12
    0
    910
  4. Masks DON’T Work! - An Interview with PPE & Exposure Control Expert, Stephen Petty

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

    138
    1
    7.86K
    17
  6. Stephen Petty - On the effectiveness of masks

    Stephen Petty - On the effectiveness of masks

    70
  7. Stephen Petty - On the effectiveness of masks

    Stephen Petty - On the effectiveness of masks

    23
  8. 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)

    51
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    11.3K
    7
  9. Testimony: Industrial Hygienist Stephen Petty

    Testimony: Industrial Hygienist Stephen Petty

    45
  11. Effectiveness of "Masks" by Stephen Petty - Council Meeting

    Effectiveness of "Masks" by Stephen Petty - Council Meeting

    62
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    1.82K
    4
  13. Stephen Petty on the Effectiveness of Masks

    Stephen Petty on the Effectiveness of Masks

    15
  16. Stephen Petty - On the effectiveness of Masks

    Stephen Petty - On the effectiveness of Masks

    68
  18. Stephen Petty - On the effectiveness of masks.

    Stephen Petty - On the effectiveness of masks.

    60
  19. Stephen Petty desmitifica cada argumento "a favor" de las mascarillas

    Stephen Petty desmitifica cada argumento "a favor" de las mascarillas

    371
  20. 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)

    251
    3
    19.2K
    45
  23. Children & Masks; CDC Document Review (1 of 4) - Ep. 11

    Children & Masks; CDC Document Review (1 of 4) - Ep. 11

    241
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    12.1K
    23
  25. Covid Revealed – Episode 8B - Bonus Video (Stephen Petty)

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

    26