Under a $126 million contract, the Department of Defense selected St. Paul, Minnesota-based 3M to increase production of N95 medical-grade masks to aid in the COVID-19 pandemic, DOD reported on May 7.

3M has several fit-testing labs around the world and now has an app, Wear It Right, to guide users through their own fit tests. The company takes ownership of the N95; after all, it was 3M that ...

Minnesota-based 3M still ships millions of respirators, though health care is not the major market it briefly was. Few objects symbolize the pandemic as well as the N95. Impossible to find until they ...