Quester, not making a smart assed remark at all but have your had your snot analyzed? If you do indeed find lead in your snot, what it really means is that your snot is doing its job and protecting your lungs. But then, you have the question, did you in fact get the lead from the shooting range or from some other source? Isn't that a blind conjecture on your part? Have your had the air at the shooting range analyed? What facts do you have that the ventilation system is ineffective? Doesn't the health department monitor these type places? The EPA? I would imagine that any person living in say NYC could, at the end of the day, blow their nose and find discolouration.
I have no experience with indoors ranges having never used one. I would imagine that a unventilated room full of folks blazing away with cast bullets could be hazardous but in the same room with overhead fans which draw away fumes and the shooters using fully jacketed bullets, any lead gases in the air would have to be minute. I don't know what percentage of the primer is actually lead but its got to be small. Other than me, and I don't too often push beans up my nose, I have known two shariff's deputies in Memphis that had spent their entire time at a public rifle range --one of them reitred while I was there-- and they seemed pretty normal to me. This range was outdoors.
Perhaps the real answer is for you to avoid indoor ranges.
I think you will have to agree that a great deal of the "facts" touted on Oprah and Dr Phil's show are from outcome driven and grant perpetuating research.
We never did answer my question about how does primer salts get on the outside of a fired case?