I’m almost positive the idea isn’t to put the metal detector right next to the honkin’ huge magnet.
Just outside the projectile zone at the perimeter of the controlled access area should do nicely.
For some reason the BBS won’t let me upload pictures right now; hopefully I can add them later.
Anyway, the MHRA guidelines (which were the first I could grab at a pinch) give a concise and practical overview. Since the physics behind them are universal the technical aspects should be transferable, local legal frameworks not withstanding.
Source:
Thing is, nothing ever is truly idiot proof, and in my experience1) giving idiots guns will make them dumber, not smarter.
1) National service. And with artillery at that.
ETA:
I love the term “safety event”. For me it implies that there will be cake and a bouncy castle.
