>we really need a CIH/P.E. who can design air curtains or capture troughs for the front lips of stages to keep theatrical effects out of the pit.  David Gordon died this past October, and we really need someone to recommend for this work.

You raise an important point, however my webinar addresses laboratory ventilation issues only; specifically, explaining the relationship between general ventilation and fume hoods to lab occupants. The topic you suggest is related, but one I don't have experience with.

For what it's worth, I'll be using your ACTS FACTS article on the "A Foggy Day In Oslo: Special Effects Smoke Dispute" in a sophomore level safety majors course I'll be teaching this semester. It will help demonstrate the range of chemical safety concerns in the workplace to the next generation of safety professionals. Thanks for sharing it!