I left a Kodachrome slide in my window for a whole year I see the affects of light on it, it seems fine... It's a direct sun window getting hit at least half the day.
I'm not saying that a projector won't do damage just surprised the bulb would after only 1 minute.
Also I would agree that duplicating it would probably be the smart move
Dwayne's Photo still does it I believe.
Yes, Dwayne's still does it. A duplicate from a 35mm slide is US 50 cents, but from a negative or a digital file is US$1.10. I just got some back from them yesterday that I'd scanned negatives of and sent to them. B&W slides from Rollei IR400S look pretty cool
Shoot more film.
There are eight ways to put a slide into a projector tray. Seven of them are wrong.