Frac Sand Sentinel #379 Killer Pollution -Harvard and Stanford Studies 7-13-2021

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Patricia J. Popple

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Jul 13, 2021, 8:35:16 PM7/13/21

Dear Friends,

Here is your copy of the Frac Sand Sentinel for today. Air quality is
the topic and in an easily read format if you click on all 3 of the
links within the document.

Thanks for continuing to keep up with the "news" and "science" on this
issue.

Pat Popple 715-723-6398

Frac Sand Sentinel #379 Killer Pollution -Harvard and Stanford Studies 7-13-2021.docx

Frac Sand Sentinel #379 Killer Pollution -Harvard and Stanford Studies 7-13-2021.pdf

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