It was actually a really cool story when this happened during the pandemic. The original inventor of the current n95 mask production technique came out of retirement to help out.
First link is an article that merely summarize following link. Not exactly the peer-reviewable source.
Second link also has zero “actionable” citation and scarily so, has a paltry 84 citations-by. Making this actionless, “citation-free” paper an even terrible source.
It was actually a really cool story when this happened during the pandemic. The original inventor of the current n95 mask production technique came out of retirement to help out.