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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
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    1.58K
    2
  4. 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
    0
    11.5K
    7
  6. Testimony: Industrial Hygienist Stephen Petty

    Testimony: Industrial Hygienist Stephen Petty

    150
  7. Stephen Petty, Expert, Industrial Hygienist solution far more effective than masks

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

    12
    0
    956
    2
  8. Stephen Petty - On the effectiveness of masks

    Stephen Petty - On the effectiveness of masks

    74
  9. Stephen Petty - On the effectiveness of masks

    Stephen Petty - On the effectiveness of masks

    24
  10. Effectiveness of "Masks" by Stephen Petty - Council Meeting

    Effectiveness of "Masks" by Stephen Petty - Council Meeting

    62
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    1.83K
    4
  11. Stephen Petty on the Effectiveness of Masks

    Stephen Petty on the Effectiveness of Masks

    17
  12. Stephen Petty - On the effectiveness of Masks

    Stephen Petty - On the effectiveness of Masks

    104
  14. 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
    19.5K
    45
  16. Children & Masks; CDC Document Review (1 of 4) - Ep. 11

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

    241
    2
    12.1K
    23
  17. Stephen Petty-Engineering Expert on Masking

    Stephen Petty-Engineering Expert on Masking

    71
  18. Masks - The Truth is Leaking Out - Slowly

    Masks - The Truth is Leaking Out - Slowly

    143
    1
    89.6K
    45
  20. Masks vs. Respirators (What is ACTUALLY PPE) - Ep. 17

    Masks vs. Respirators (What is ACTUALLY PPE) - Ep. 17

    95
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    4.17K
    8
  21. Children & Masks; CDC Document Review (3 of 4) - Ep. 13

    Children & Masks; CDC Document Review (3 of 4) - Ep. 13

    118
    1
    4.98K
    12
  22. Children & Masks; Efficacy & Negative Effects (Part 4 of 4) - Ep. 14

    Children & Masks; Efficacy & Negative Effects (Part 4 of 4) - Ep. 14

    100
    1
    5.12K
    20
  23. Children & Masks; CDC Document Review (2 of 4) - Ep. 12

    Children & Masks; CDC Document Review (2 of 4) - Ep. 12

    112
    0
    4.27K
    7
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