Interesting. And Yikes! That's even worse than I thought for all of us on the shop floor. There was so much particulate in the air on a regular basis that a w

Interesting. And Yikes! That's even worse than I thought for all of us on the shop floor. There was so much particulate in the air on a regular basis that a white paper taped on the wall at the start of the day was gray by lunch time. No masks. Appreciate the additional insight.