Airplane filters remove 99% of particles, experts say, which can help keep transmission of COVID-19 low on flights. But face masks provide an additional layer of protection -- especially if you're ...
David Dilling has decades of experience in the air filtration business, but the past year has created more challenges — and opportunities — for him than any time he can remember. The 54-year-old San ...
ST. PAUL -- Global concerns over avian influenza mean busy times for 3M Co. and other businesses that make air-filtering masks. Plants that make 3M's face masks have been running nonstop in recent ...
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