RE: My Maths9 Oct 2020 22:09
3M made the original N95 respirator mask, from wiki
"The N95 respirator mask was developed by 3M and approved in 1972.[77] Being able to filter viral particulates, its use was recommended during the COVID-19 pandemic but supply soon became short.[77] Much of the company's supply had already been sold prior to the outbreak.[78]
The shortages lead to the U.S. government asking 3M to stop exporting U.S.-made N95 respirator masks to Canada and to Latin American countries,[79] and President Donald Trump invoked the Defense Production Act to require 3M to prioritize orders from the federal government.[80] The dispute was resolved when 3M agreed to import more respirators, mostly from its factories in China.[80]
3M would later strike a $70MCAD deal with the federal government of Canada and the Ontario provincial government to produce N95 masks at their plant in Brockville, Ontario.[81]"