Would this be an interesting series?
There is a lot of interest by different people of all ages for your topic
as for this Hub, I would add a video of some sort that relates to your Hub, even if it's a funny one 
humor is always good to add to our Hubs, let our audience walk away with a smile next to learning. Also, careful on topics in this area since topic of 'personal protective devices' is not popular. 
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