HenOnAJuneBug
Crowing
- May 20, 2015
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So maybe any grass?
I've never read of such. I didn't know this, but apparently sugarcane has the same issue.
Production of potentially hazardous respirable silica airborne particulate from the burning of sugarcane
https://www.sciencedirect.com/science/article/abs/pii/S1352231008002756