Here's a short article from the American Suppressor Association on the CDC recommendation:
https://americansuppressorassociation.com/cdc-study-use-suppressors-to-reduce-noise-exposure/
Go to the top of page 5 to see what they say about suppressors.
https://www.cdc.gov/niosh/hhe/reports/pdfs/2011-0069-3140.pdf
The cost to purchase this entire study is $54. The abstract, however, says it all.
https://www.tandfonline.com/doi/full/10.1080/14992027.2017.1407459?scroll=top&needAccess=true
On page i and page 14, the use of suppressors is recommended.
https://www.cdc.gov/niosh/hhe/reports/pdfs/2013-0124-3208.pdf
https://americansuppressorassociation.com/cdc-study-use-suppressors-to-reduce-noise-exposure/
Go to the top of page 5 to see what they say about suppressors.
https://www.cdc.gov/niosh/hhe/reports/pdfs/2011-0069-3140.pdf
The cost to purchase this entire study is $54. The abstract, however, says it all.
https://www.tandfonline.com/doi/full/10.1080/14992027.2017.1407459?scroll=top&needAccess=true
On page i and page 14, the use of suppressors is recommended.
https://www.cdc.gov/niosh/hhe/reports/pdfs/2013-0124-3208.pdf