"real research" like this page:
https://blog.sfgate.com/chrongreen/2008/08/12/casinos-get-the-lead-out-of-poker-chips/
Emphasis mine:
"Lead is well-documented as a dangerous metal that can retard physical and mental development, and government restrictions in paint, plumbing, gasoline and children’s toys have tightened over the years. Studies link exposure to the fetus to lowered IQs in children. The U.S. Environmental Protection Agency and state agencies list lead as a carcinogen, and other studies show associations between exposure and women’s infertility and an increase in the risk of heart attacks, strokes and high blood pressure.
The casinos can keep using the leaded poker chips, but they have to post this sign:
“Gaming chips used at this establishment contain lead, a chemical known to cause cancer, birth defects and other reproductive harm. Wash hands after handling the chips.”
There's a reason why Proposition 65 passed in California and has been law for 35 years and for a damn good reason.
Or this article where the casino dealers openly admitted they "don't know if they're handling toxic materials for a living. Turns out that casino chips sometimes get dropped and that spills tiny particles of lead all over the place. Lead-based paint was outlawed in 1978, and for good reason -- because when tiny microns of lead get into the air, people breathe in that lovely stuff. in casinos, I can't imagine it being too hard for a chip that's 45%+ lead to let out tiny particles that will be breathed in by patrons, dealers, Keno girls, cocktail waitresses and the like...
https://www.casinocitytimes.com/liz...e-gaming-chips-hazardous-to-your-health-49292
Not everyone is like you and keeps older chips behind 14 inches of bulletproof glass triple locked with a combination secretly locked with only a part of it in three separate safes and that was especially true in the '90s. Prior to ~25 years ago, people were drunk and handling chips and dropping them, even though casinos pump in fresh oxygen you're still circulating lead-based paint in the air of a casino which last time I checked doesn't exactly air out their casinos very often to allow fresh air in. HVAC, which is the new standard really wasn't a thing until 20 years ago, even with this technology, most people can't walk into a casino without it smelling of stale cigarettes from the gaming floor since Nevada's laws are a lot looser than California's or Arizona's, specifically that at least fiddling around with smoking bans only to still allow it on the floor prior to Covid, as someone who lived there for nearly 2 years I can tell you it wreaked havoc on my lungs.
https://www.casinoair.com/casino-air-vs-100-outside-air/
But that's just me not doing "enough research" for you, I guess.
If you really want to do something, what I am curious about was I was playing Cuphead and one of the bosses is a stack of poker chips, since Paulson didn't come into existence until 1963, I am wondering who would have been the Paulson of 1930 when the game was set? There's a question for you.
