By reading this metal warning plate that sits in front of each elevator entrance to my office building.
Hmm should I be worried? I know every building contains similar materials, but the state of California requires there be a notice put up. It reminds me of when I was used to commute by The Tube in London and instead of saying that their was a delay the announcements would be brutally honest and say "there is a delay due to a fire on the tracks." I don't need to know that, I would think and then I'd wonder, Is everyone ok? Will the fire spread? What if a fire starts when I'm on the train?