Bringing women into the workforce during WWII necessitated adjusting to new sorts of safeguards that weren’t needed when men worked the production line. As the brave woman on the right is showing, they had to come up with breast protectors. The sign behind them is reminding people that 2226 workers had suffered eye injuries in the previous month alone. I don’t know how big their factory was but that’s a huge number and was, I would think, a stark reminder to management that they were dealing with a whole new workforce doing things they were unprepared for.