Group outfitted with @UWMadEngr Badger Seals + surgical masks (ASTM2). Thanks to @UWMadison for open sourcing the plans, & all the aerosol scientists (@linseymarr @kprather88) on Twitter who promoted this approach. Cheap & so fast to make. #UAlberta https://t.co/wXRf0R0Fa7

@JBuriak